"ER" meaning in English

See ER in All languages combined, or Wiktionary

Proper name

Forms: E.R. [alternative], E. R. [alternative]
Etymology: Abbreviation Head templates: {{en-proper-noun}} ER
  1. Initialism of Elizabeth Regina (“Queen Elizabeth”). Tags: abbreviation, alt-of, initialism Alternative form of: Elizabeth Regina (extra: Queen Elizabeth) Synonyms: EIIR
    Sense id: en-ER-en-name-dVrkJU1M Categories (other): Individuals, English entries with incorrect language header, Pages with entries Disambiguation of English entries with incorrect language header: 15 12 8 10 20 5 6 1 3 19 1 Disambiguation of Pages with entries: 19 14 9 6 19 5 3 1 3 22 1
  2. (British) Initialism of Edward Rex (on coins, letterboxes, etc.) The royal cypher for Edward VII, king of Great Britain Tags: British, abbreviation, alt-of, initialism Alternative form of: Edward Rex (extra: (on coins, letterboxes, etc.) The royal cypher for Edward VII, king of Great Britain) Synonyms: EVIIR
    Sense id: en-ER-en-name-i2J-4hpp Categories (other): British English, Individuals, English entries with incorrect language header, Pages with entries Disambiguation of English entries with incorrect language header: 15 12 8 10 20 5 6 1 3 19 1 Disambiguation of Pages with entries: 19 14 9 6 19 5 3 1 3 22 1
  3. (US politics) Initialism of Eleanor Roosevelt. Tags: US, abbreviation, alt-of, initialism Alternative form of: Eleanor Roosevelt
    Sense id: en-ER-en-name-P7PlQ3B~ Categories (other): Individuals, US politics Topics: government, politics
  4. (US sports) Abbreviation of Erie (“Erie, Pennsylvania, USA”). Tags: US, abbreviation, alt-of Alternative form of: Erie (extra: Erie, Pennsylvania, USA)
    Sense id: en-ER-en-name-b5CeWrBK Categories (other): American English, Sports Topics: hobbies, lifestyle, sports

Noun

Forms: ERs [plural], E.R. [alternative], E. R. [alternative]
Etymology: Abbreviation Head templates: {{en-noun|~}} ER (countable and uncountable, plural ERs)
  1. (baseball) Initialism of earned run. Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: earned run Coordinate_terms: ERA
    Sense id: en-ER-en-noun-3DRbVCIw Categories (other): Baseball, English entries with incorrect language header, Pages with entries Disambiguation of English entries with incorrect language header: 15 12 8 10 20 5 6 1 3 19 1 Disambiguation of Pages with entries: 19 14 9 6 19 5 3 1 3 22 1 Topics: ball-games, baseball, games, hobbies, lifestyle, sports
  2. (biology) Initialism of endoplasmic reticulum. Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: endoplasmic reticulum
    Sense id: en-ER-en-noun-ZoN1x1qq Categories (other): Biology Topics: biology, natural-sciences
  3. (computing) Initialism of entity-relationship. Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: entity-relationship Related terms: E-R [alternative]
    Sense id: en-ER-en-noun-3WVStHP4 Categories (other): Computing Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences
  4. (medicine) Initialism of emergency room. Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: emergency room
    Sense id: en-ER-en-noun-s7fZZlOE Categories (other): Medicine Topics: medicine, sciences
  5. (biochemistry) Initialism of estrogen receptor. Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: estrogen receptor
    Sense id: en-ER-en-noun-H3rpzjtH Categories (other): Biochemistry Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences
  6. (physics) Initialism of Einstein-Rosen bridge. Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: Einstein-Rosen bridge Related terms: E-R [alternative] Coordinate_terms: EPR
    Sense id: en-ER-en-noun-4N~NM9aS Categories (other): Physics, English entries with incorrect language header, Pages with 3 entries, Pages with entries Disambiguation of English entries with incorrect language header: 15 12 8 10 20 5 6 1 3 19 1 Disambiguation of Pages with 3 entries: 17 14 7 9 17 4 3 1 2 24 1 Disambiguation of Pages with entries: 19 14 9 6 19 5 3 1 3 22 1 Topics: natural-sciences, physical-sciences, physics
  7. (military) Initialism of enhanced radiation. Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: enhanced radiation
    Sense id: en-ER-en-noun-M5PoGDid Categories (other): Military Topics: government, military, politics, war
The following are not (yet) sense-disambiguated
Related terms: go ER

Inflected forms

Alternative forms

{
  "etymology_text": "Abbreviation",
  "forms": [
    {
      "form": "E.R.",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "E. R.",
      "tags": [
        "alternative"
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  "head_templates": [
    {
      "args": {},
      "expansion": "ER",
      "name": "en-proper-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "Queen Elizabeth",
          "word": "Elizabeth Regina"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Individuals",
          "orig": "en:Individuals",
          "parents": [],
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        },
        {
          "_dis": "15 12 8 10 20 5 6 1 3 19 1",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "19 14 9 6 19 5 3 1 3 22 1",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Initialism of Elizabeth Regina (“Queen Elizabeth”)."
      ],
      "id": "en-ER-en-name-dVrkJU1M",
      "links": [
        [
          "Elizabeth",
          "Elizabeth#English"
        ],
        [
          "Regina",
          "Regina#English"
        ]
      ],
      "synonyms": [
        {
          "word": "EIIR"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    },
    {
      "alt_of": [
        {
          "extra": "(on coins, letterboxes, etc.) The royal cypher for Edward VII, king of Great Britain",
          "word": "Edward Rex"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
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          "name": "Individuals",
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        {
          "_dis": "15 12 8 10 20 5 6 1 3 19 1",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "19 14 9 6 19 5 3 1 3 22 1",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
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      ],
      "glosses": [
        "Initialism of Edward Rex (on coins, letterboxes, etc.) The royal cypher for Edward VII, king of Great Britain"
      ],
      "id": "en-ER-en-name-i2J-4hpp",
      "links": [
        [
          "Edward",
          "Edward#English"
        ],
        [
          "Rex",
          "rex#English"
        ],
        [
          "royal cypher",
          "royal cypher#English"
        ],
        [
          "Edward VII",
          "w:en:Edward VII"
        ]
      ],
      "raw_glosses": [
        "(British) Initialism of Edward Rex (on coins, letterboxes, etc.) The royal cypher for Edward VII, king of Great Britain"
      ],
      "synonyms": [
        {
          "word": "EVIIR"
        }
      ],
      "tags": [
        "British",
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    },
    {
      "alt_of": [
        {
          "word": "Eleanor Roosevelt"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Individuals",
          "orig": "en:Individuals",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "US politics",
          "orig": "en:US politics",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of Eleanor Roosevelt."
      ],
      "id": "en-ER-en-name-P7PlQ3B~",
      "links": [
        [
          "Eleanor Roosevelt",
          "w:Eleanor Roosevelt"
        ]
      ],
      "raw_glosses": [
        "(US politics) Initialism of Eleanor Roosevelt."
      ],
      "tags": [
        "US",
        "abbreviation",
        "alt-of",
        "initialism"
      ],
      "topics": [
        "government",
        "politics"
      ]
    },
    {
      "alt_of": [
        {
          "extra": "Erie, Pennsylvania, USA",
          "word": "Erie"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Sports",
          "orig": "en:Sports",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Abbreviation of Erie (“Erie, Pennsylvania, USA”)."
      ],
      "id": "en-ER-en-name-b5CeWrBK",
      "links": [
        [
          "sports",
          "sports"
        ],
        [
          "Erie",
          "Erie#English"
        ]
      ],
      "raw_glosses": [
        "(US sports) Abbreviation of Erie (“Erie, Pennsylvania, USA”)."
      ],
      "tags": [
        "US",
        "abbreviation",
        "alt-of"
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "sports"
      ]
    }
  ],
  "word": "ER"
}

{
  "etymology_text": "Abbreviation",
  "forms": [
    {
      "form": "ERs",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "E.R.",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "E. R.",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "ER (countable and uncountable, plural ERs)",
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    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "_dis1": "0 0 0 0 0 0 0",
      "word": "go ER"
    }
  ],
  "senses": [
    {
      "alt_of": [
        {
          "word": "earned run"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Baseball",
          "orig": "en:Baseball",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "15 12 8 10 20 5 6 1 3 19 1",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
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        },
        {
          "_dis": "19 14 9 6 19 5 3 1 3 22 1",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "coordinate_terms": [
        {
          "word": "ERA"
        }
      ],
      "glosses": [
        "Initialism of earned run."
      ],
      "id": "en-ER-en-noun-3DRbVCIw",
      "links": [
        [
          "baseball",
          "baseball"
        ],
        [
          "earned run",
          "earned run#English"
        ]
      ],
      "raw_glosses": [
        "(baseball) Initialism of earned run."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "ball-games",
        "baseball",
        "games",
        "hobbies",
        "lifestyle",
        "sports"
      ]
    },
    {
      "alt_of": [
        {
          "word": "endoplasmic reticulum"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Biology",
          "orig": "en:Biology",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of endoplasmic reticulum."
      ],
      "id": "en-ER-en-noun-ZoN1x1qq",
      "links": [
        [
          "biology",
          "biology"
        ],
        [
          "endoplasmic reticulum",
          "endoplasmic reticulum#English"
        ]
      ],
      "raw_glosses": [
        "(biology) Initialism of endoplasmic reticulum."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "biology",
        "natural-sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "entity-relationship"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Computing",
          "orig": "en:Computing",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of entity-relationship."
      ],
      "id": "en-ER-en-noun-3WVStHP4",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "entity",
          "entity#English"
        ],
        [
          "relationship",
          "relationship#English"
        ]
      ],
      "raw_glosses": [
        "(computing) Initialism of entity-relationship."
      ],
      "related": [
        {
          "tags": [
            "alternative"
          ],
          "word": "E-R"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of",
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        "initialism",
        "uncountable"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "emergency room"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Medicine",
          "orig": "en:Medicine",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of emergency room."
      ],
      "id": "en-ER-en-noun-s7fZZlOE",
      "links": [
        [
          "medicine",
          "medicine"
        ],
        [
          "emergency room",
          "emergency room#English"
        ]
      ],
      "raw_glosses": [
        "(medicine) Initialism of emergency room."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "medicine",
        "sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "estrogen receptor"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Biochemistry",
          "orig": "en:Biochemistry",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of estrogen receptor."
      ],
      "id": "en-ER-en-noun-H3rpzjtH",
      "links": [
        [
          "biochemistry",
          "biochemistry"
        ],
        [
          "estrogen",
          "estrogen#English"
        ],
        [
          "receptor",
          "receptor#English"
        ]
      ],
      "raw_glosses": [
        "(biochemistry) Initialism of estrogen receptor."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
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        "initialism",
        "uncountable"
      ],
      "topics": [
        "biochemistry",
        "biology",
        "chemistry",
        "microbiology",
        "natural-sciences",
        "physical-sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "Einstein-Rosen bridge"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "15 12 8 10 20 5 6 1 3 19 1",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "17 14 7 9 17 4 3 1 2 24 1",
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "19 14 9 6 19 5 3 1 3 22 1",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "coordinate_terms": [
        {
          "word": "EPR"
        }
      ],
      "glosses": [
        "Initialism of Einstein-Rosen bridge."
      ],
      "id": "en-ER-en-noun-4N~NM9aS",
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "Einstein-Rosen bridge",
          "Einstein-Rosen bridge#English"
        ]
      ],
      "raw_glosses": [
        "(physics) Initialism of Einstein-Rosen bridge."
      ],
      "related": [
        {
          "tags": [
            "alternative"
          ],
          "word": "E-R"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    },
    {
      "alt_of": [
        {
          "word": "enhanced radiation"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Military",
          "orig": "en:Military",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of enhanced radiation."
      ],
      "id": "en-ER-en-noun-M5PoGDid",
      "links": [
        [
          "military",
          "military"
        ],
        [
          "enhanced",
          "enhanced#English"
        ],
        [
          "radiation",
          "radiation#English"
        ]
      ],
      "raw_glosses": [
        "(military) Initialism of enhanced radiation."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
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      ],
      "topics": [
        "government",
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        "politics",
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      ]
    }
  ],
  "word": "ER"
}
{
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    "English uncountable nouns",
    "Pages with 3 entries",
    "Pages with entries"
  ],
  "etymology_text": "Abbreviation",
  "forms": [
    {
      "form": "E.R.",
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    {
      "form": "E. R.",
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  "head_templates": [
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  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "Queen Elizabeth",
          "word": "Elizabeth Regina"
        }
      ],
      "categories": [
        "English initialisms",
        "en:Individuals"
      ],
      "glosses": [
        "Initialism of Elizabeth Regina (“Queen Elizabeth”)."
      ],
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        [
          "Elizabeth",
          "Elizabeth#English"
        ],
        [
          "Regina",
          "Regina#English"
        ]
      ],
      "synonyms": [
        {
          "word": "EIIR"
        }
      ],
      "tags": [
        "abbreviation",
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    {
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          "extra": "(on coins, letterboxes, etc.) The royal cypher for Edward VII, king of Great Britain",
          "word": "Edward Rex"
        }
      ],
      "categories": [
        "British English",
        "English initialisms",
        "en:Individuals"
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      "glosses": [
        "Initialism of Edward Rex (on coins, letterboxes, etc.) The royal cypher for Edward VII, king of Great Britain"
      ],
      "links": [
        [
          "Edward",
          "Edward#English"
        ],
        [
          "Rex",
          "rex#English"
        ],
        [
          "royal cypher",
          "royal cypher#English"
        ],
        [
          "Edward VII",
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        ]
      ],
      "raw_glosses": [
        "(British) Initialism of Edward Rex (on coins, letterboxes, etc.) The royal cypher for Edward VII, king of Great Britain"
      ],
      "synonyms": [
        {
          "word": "EVIIR"
        }
      ],
      "tags": [
        "British",
        "abbreviation",
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    },
    {
      "alt_of": [
        {
          "word": "Eleanor Roosevelt"
        }
      ],
      "categories": [
        "English initialisms",
        "en:Individuals",
        "en:US politics"
      ],
      "glosses": [
        "Initialism of Eleanor Roosevelt."
      ],
      "links": [
        [
          "Eleanor Roosevelt",
          "w:Eleanor Roosevelt"
        ]
      ],
      "raw_glosses": [
        "(US politics) Initialism of Eleanor Roosevelt."
      ],
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        "US",
        "abbreviation",
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      ],
      "topics": [
        "government",
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      ]
    },
    {
      "alt_of": [
        {
          "extra": "Erie, Pennsylvania, USA",
          "word": "Erie"
        }
      ],
      "categories": [
        "American English",
        "English abbreviations",
        "en:Sports"
      ],
      "glosses": [
        "Abbreviation of Erie (“Erie, Pennsylvania, USA”)."
      ],
      "links": [
        [
          "sports",
          "sports"
        ],
        [
          "Erie",
          "Erie#English"
        ]
      ],
      "raw_glosses": [
        "(US sports) Abbreviation of Erie (“Erie, Pennsylvania, USA”)."
      ],
      "tags": [
        "US",
        "abbreviation",
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      "topics": [
        "hobbies",
        "lifestyle",
        "sports"
      ]
    }
  ],
  "word": "ER"
}

{
  "categories": [
    "English abbreviations",
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English proper nouns",
    "English uncountable nouns",
    "Pages with 3 entries",
    "Pages with entries"
  ],
  "etymology_text": "Abbreviation",
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    {
      "form": "ERs",
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    {
      "form": "E.R.",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "E. R.",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "ER (countable and uncountable, plural ERs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "go ER"
    }
  ],
  "senses": [
    {
      "alt_of": [
        {
          "word": "earned run"
        }
      ],
      "categories": [
        "English initialisms",
        "en:Baseball"
      ],
      "coordinate_terms": [
        {
          "word": "ERA"
        }
      ],
      "glosses": [
        "Initialism of earned run."
      ],
      "links": [
        [
          "baseball",
          "baseball"
        ],
        [
          "earned run",
          "earned run#English"
        ]
      ],
      "raw_glosses": [
        "(baseball) Initialism of earned run."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "ball-games",
        "baseball",
        "games",
        "hobbies",
        "lifestyle",
        "sports"
      ]
    },
    {
      "alt_of": [
        {
          "word": "endoplasmic reticulum"
        }
      ],
      "categories": [
        "English initialisms",
        "en:Biology"
      ],
      "glosses": [
        "Initialism of endoplasmic reticulum."
      ],
      "links": [
        [
          "biology",
          "biology"
        ],
        [
          "endoplasmic reticulum",
          "endoplasmic reticulum#English"
        ]
      ],
      "raw_glosses": [
        "(biology) Initialism of endoplasmic reticulum."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "biology",
        "natural-sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "entity-relationship"
        }
      ],
      "categories": [
        "English initialisms",
        "en:Computing"
      ],
      "glosses": [
        "Initialism of entity-relationship."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "entity",
          "entity#English"
        ],
        [
          "relationship",
          "relationship#English"
        ]
      ],
      "raw_glosses": [
        "(computing) Initialism of entity-relationship."
      ],
      "related": [
        {
          "tags": [
            "alternative"
          ],
          "word": "E-R"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "emergency room"
        }
      ],
      "categories": [
        "English initialisms",
        "en:Medicine"
      ],
      "glosses": [
        "Initialism of emergency room."
      ],
      "links": [
        [
          "medicine",
          "medicine"
        ],
        [
          "emergency room",
          "emergency room#English"
        ]
      ],
      "raw_glosses": [
        "(medicine) Initialism of emergency room."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "medicine",
        "sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "estrogen receptor"
        }
      ],
      "categories": [
        "English initialisms",
        "en:Biochemistry"
      ],
      "glosses": [
        "Initialism of estrogen receptor."
      ],
      "links": [
        [
          "biochemistry",
          "biochemistry"
        ],
        [
          "estrogen",
          "estrogen#English"
        ],
        [
          "receptor",
          "receptor#English"
        ]
      ],
      "raw_glosses": [
        "(biochemistry) Initialism of estrogen receptor."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "biochemistry",
        "biology",
        "chemistry",
        "microbiology",
        "natural-sciences",
        "physical-sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "Einstein-Rosen bridge"
        }
      ],
      "categories": [
        "English initialisms",
        "en:Physics"
      ],
      "coordinate_terms": [
        {
          "word": "EPR"
        }
      ],
      "glosses": [
        "Initialism of Einstein-Rosen bridge."
      ],
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "Einstein-Rosen bridge",
          "Einstein-Rosen bridge#English"
        ]
      ],
      "raw_glosses": [
        "(physics) Initialism of Einstein-Rosen bridge."
      ],
      "related": [
        {
          "tags": [
            "alternative"
          ],
          "word": "E-R"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    },
    {
      "alt_of": [
        {
          "word": "enhanced radiation"
        }
      ],
      "categories": [
        "English initialisms",
        "en:Military"
      ],
      "glosses": [
        "Initialism of enhanced radiation."
      ],
      "links": [
        [
          "military",
          "military"
        ],
        [
          "enhanced",
          "enhanced#English"
        ],
        [
          "radiation",
          "radiation#English"
        ]
      ],
      "raw_glosses": [
        "(military) Initialism of enhanced radiation."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "government",
        "military",
        "politics",
        "war"
      ]
    }
  ],
  "word": "ER"
}

Download raw JSONL data for ER meaning in English (6.4kB)


This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2026-02-08 from the enwiktionary dump dated 2026-02-01 using wiktextract (f492ef9 and 9905b1f). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

If you use this data in academic research, please cite Tatu Ylonen: Wiktextract: Wiktionary as Machine-Readable Structured Data, Proceedings of the 13th Conference on Language Resources and Evaluation (LREC), pp. 1317-1325, Marseille, 20-25 June 2022. Linking to the relevant page(s) under https://kaikki.org would also be greatly appreciated.