"RE" meaning in English

See RE in All languages combined, or Wiktionary

Proper name

Etymology: Abbreviations. Etymology templates: {{abbrev|en}} Abbreviation Head templates: {{en-prop}} RE
  1. Initialism of Royal Engineers, a regiment in the British Army. Tags: abbreviation, alt-of, initialism Alternative form of: Royal Engineers (extra: a regiment in the British Army)
    Sense id: en-RE-en-name-v12BFZF0 Categories (other): English symbols, English terms containing italics Disambiguation of English symbols: 13 3 3 8 11 10 4 4 5 5 15 4 3 7 4 Disambiguation of English terms containing italics: 12 4 3 9 13 10 4 4 6 5 13 4 3 7 4
  2. (rail transport) The station code of Rewari Junction railway station in India.
  3. (classics) Abbreviation of Realencyclopädie der classischen Altertumswissenschaft. Tags: abbreviation, alt-of Alternative form of: Realencyclopädie der classischen Altertumswissenschaft
    Sense id: en-RE-en-name-pffvW6aP
The following are not (yet) sense-disambiguated
Etymology number: 2

Noun

Forms: REs [plural]
Etymology: Abbreviations. Etymology templates: {{abbrev|en}} Abbreviation Head templates: {{en-noun|~}} RE (countable and uncountable, plural REs)
  1. (computing theory, computational complexity theory) Initialism of recursively enumerable; the class of decision problems for which a “yes” answer can be verified by a Turing machine in a finite amount of time. See more at RE (complexity) on Wikipedia.Wikipedia Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: recursively enumerable (extra: the class of decision problems for which a “yes” answer can be verified by a Turing machine in a finite amount of time. See more at RE (complexity) on Wikipedia.Wikipedia) Derived forms: co-RE, coRE, co-RE-complete, RE-complete
    Sense id: en-RE-en-noun-WpjqDYHf Categories (other): Theory of computing, English entries with incorrect language header, Pages with 3 entries, Pages with entries Disambiguation of English entries with incorrect language header: 6 10 3 24 3 6 6 1 1 8 12 2 1 17 1 Disambiguation of Pages with 3 entries: 7 11 3 25 4 5 4 2 2 6 10 2 2 16 2 Disambiguation of Pages with entries: 4 14 5 28 3 3 5 1 1 5 8 1 1 20 1 Topics: computing, computing-theory, engineering, mathematics, natural-sciences, physical-sciences, sciences
  2. Initialism of religious education. Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: religious education
    Sense id: en-RE-en-noun-p~uykV2S Categories (other): English symbols, English terms containing italics Disambiguation of English symbols: 13 3 3 8 11 10 4 4 5 5 15 4 3 7 4 Disambiguation of English terms containing italics: 12 4 3 9 13 10 4 4 6 5 13 4 3 7 4
  3. Initialism of rare earth. Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: rare earth
    Sense id: en-RE-en-noun-uiWSksSw
  4. (biochemistry, genetics) Initialism of response element. Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: response element
    Sense id: en-RE-en-noun-ogIykx7z Categories (other): Biochemistry, Genetics Topics: biochemistry, biology, chemistry, genetics, medicine, microbiology, natural-sciences, physical-sciences, sciences
  5. Initialism of real estate. Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: real estate
    Sense id: en-RE-en-noun-kVxZ1OBB
  6. Initialism of renewable energy. Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: renewable energy
    Sense id: en-RE-en-noun-59PLG-N4
  7. (computing, countable) Initialism of run-time environment. Tags: abbreviation, alt-of, countable, initialism Alternative form of: run-time environment
    Sense id: en-RE-en-noun-6uFm1chT Categories (other): Computing Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences
  8. (computing) Initialism of reverse engineering. Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: reverse engineering
    Sense id: en-RE-en-noun-p6~o4cC~ Categories (other): Computing, English symbols, English terms containing italics Disambiguation of English symbols: 13 3 3 8 11 10 4 4 5 5 15 4 3 7 4 Disambiguation of English terms containing italics: 12 4 3 9 13 10 4 4 6 5 13 4 3 7 4 Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences
  9. (medicine) Initialism of reproductive endocrinologist. Tags: abbreviation, alt-of, countable, initialism, uncountable Alternative form of: reproductive endocrinologist
    Sense id: en-RE-en-noun-o22KIbc6 Categories (other): Medicine Topics: medicine, sciences
The following are not (yet) sense-disambiguated
Etymology number: 2

Preposition

Etymology: See at re. Head templates: {{head|en|preposition}} RE
  1. Alternative form of re (“regarding”). Tags: alt-of, alternative Alternative form of: re (extra: regarding)
    Sense id: en-RE-en-prep-en:regarding Categories (other): English prepositions
The following are not (yet) sense-disambiguated
Etymology number: 1

Symbol

Forms: R_E [canonical]
Etymology: Abbreviations. Etymology templates: {{abbrev|en}} Abbreviation Head templates: {{head|en|symbol|head=R_E}} R_E
  1. (astronomy) Earth radius: the radius of planet Earth, regarded as a unit of measurement. Synonyms: mul:R_🜨, mul:R_♁
    Sense id: en-RE-en-symbol-JSqQMTRi Categories (other): Astronomy Topics: astronomy, natural-sciences
  2. (sum of parts) The radius of the Earth specifically. Synonyms: mul:R_🜨, mul:R_♁
    Sense id: en-RE-en-symbol-2UoN5kcu
The following are not (yet) sense-disambiguated
Etymology number: 2

Inflected forms

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        "(sum of parts) The radius of the Earth specifically."
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          "name": "Rail transportation",
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          "name": "Station codes",
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        "The station code of Rewari Junction railway station in India."
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    },
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        "Initialism of rare earth."
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          "kind": "other",
          "langcode": "en",
          "name": "Genetics",
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          "genetics",
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        "Initialism of real estate."
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        "Initialism of renewable energy."
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          "word": "run-time environment"
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          "name": "Computing",
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        "Initialism of run-time environment."
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          "parents": [],
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        }
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        "Initialism of reverse engineering."
      ],
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          "computing",
          "computing#Noun"
        ],
        [
          "reverse engineering",
          "reverse engineering#English"
        ]
      ],
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        "(computing) Initialism of reverse engineering."
      ],
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        "abbreviation",
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      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "reproductive endocrinologist"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Medicine",
          "orig": "en:Medicine",
          "parents": [],
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        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              125,
              127
            ]
          ],
          "ref": "1997 April 21, Sheri Feldbusch, “Looking for a little guidance.”, in alt.support.pco (Usenet):",
          "text": "I am new to this group and have not had the courage to post many messages. I just had my second/follow-up apointment with my RE today. I have only recently been diagnosed with PCO and had the routine tests, HSG, etc.. done. Today, we talked about those results and what our next plan of action is.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Initialism of reproductive endocrinologist."
      ],
      "id": "en-RE-en-noun-o22KIbc6",
      "links": [
        [
          "medicine",
          "medicine"
        ],
        [
          "reproductive",
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        ]
      ],
      "raw_glosses": [
        "(medicine) Initialism of reproductive endocrinologist."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "medicine",
        "sciences"
      ]
    }
  ],
  "word": "RE"
}
{
  "categories": [
    "English abbreviations",
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English prepositions",
    "English proper nouns",
    "English symbols",
    "English terms containing italics",
    "English uncountable nouns",
    "Pages with 3 entries",
    "Pages with entries"
  ],
  "etymology_number": "1",
  "etymology_text": "See at re.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "preposition"
      },
      "expansion": "RE",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "regarding",
          "word": "re"
        }
      ],
      "glosses": [
        "Alternative form of re (“regarding”)."
      ],
      "links": [
        [
          "re",
          "re#English:_regarding"
        ]
      ],
      "senseid": [
        "en:regarding"
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "RE"
}

{
  "categories": [
    "English abbreviations",
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English proper nouns",
    "English symbols",
    "English terms containing italics",
    "English uncountable nouns",
    "Pages with 3 entries",
    "Pages with entries"
  ],
  "etymology_number": "2",
  "etymology_templates": [
    {
      "args": {
        "1": "en"
      },
      "expansion": "Abbreviation",
      "name": "abbrev"
    }
  ],
  "etymology_text": "Abbreviations.",
  "forms": [
    {
      "form": "R_E",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "symbol",
        "head": "R_E"
      },
      "expansion": "R_E",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "symbol",
  "senses": [
    {
      "categories": [
        "en:Astronomy"
      ],
      "glosses": [
        "Earth radius: the radius of planet Earth, regarded as a unit of measurement."
      ],
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "Earth radius",
          "Earth radius"
        ],
        [
          "radius",
          "radius"
        ],
        [
          "Earth",
          "Earth"
        ],
        [
          "measurement",
          "measurement"
        ]
      ],
      "raw_glosses": [
        "(astronomy) Earth radius: the radius of planet Earth, regarded as a unit of measurement."
      ],
      "synonyms": [
        {
          "word": "mul:R_🜨"
        },
        {
          "word": "mul:R_♁"
        }
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ]
    },
    {
      "glosses": [
        "The radius of the Earth specifically."
      ],
      "links": [
        [
          "specifically",
          "specifically"
        ]
      ],
      "qualifier": "sum of parts",
      "raw_glosses": [
        "(sum of parts) The radius of the Earth specifically."
      ],
      "synonyms": [
        {
          "word": "mul:R_🜨"
        },
        {
          "word": "mul:R_♁"
        }
      ]
    }
  ],
  "word": "RE"
}

{
  "categories": [
    "English abbreviations",
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English proper nouns",
    "English symbols",
    "English terms containing italics",
    "English uncountable nouns",
    "Pages with 3 entries",
    "Pages with entries"
  ],
  "etymology_number": "2",
  "etymology_templates": [
    {
      "args": {
        "1": "en"
      },
      "expansion": "Abbreviation",
      "name": "abbrev"
    }
  ],
  "etymology_text": "Abbreviations.",
  "head_templates": [
    {
      "args": {},
      "expansion": "RE",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "a regiment in the British Army",
          "word": "Royal Engineers"
        }
      ],
      "categories": [
        "English initialisms"
      ],
      "glosses": [
        "Initialism of Royal Engineers, a regiment in the British Army."
      ],
      "links": [
        [
          "Royal Engineers",
          "w:Royal Engineers"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    },
    {
      "categories": [
        "English abbreviations",
        "English links with redundant alt parameters",
        "English links with redundant wikilinks",
        "en:Rail transportation",
        "en:Station codes"
      ],
      "glosses": [
        "The station code of Rewari Junction railway station in India."
      ],
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "station code",
          "w:station code"
        ],
        [
          "Rewari Junction railway station",
          "w:Rewari Junction railway station"
        ]
      ],
      "raw_glosses": [
        "(rail transport) The station code of Rewari Junction railway station in India."
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    },
    {
      "alt_of": [
        {
          "word": "Realencyclopädie der classischen Altertumswissenschaft"
        }
      ],
      "categories": [
        "English abbreviations"
      ],
      "glosses": [
        "Abbreviation of Realencyclopädie der classischen Altertumswissenschaft."
      ],
      "links": [
        [
          "classics",
          "classics"
        ],
        [
          "Realencyclopädie der classischen Altertumswissenschaft",
          "w:Realencyclopädie der classischen Altertumswissenschaft"
        ]
      ],
      "qualifier": "classics",
      "raw_glosses": [
        "(classics) Abbreviation of Realencyclopädie der classischen Altertumswissenschaft."
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "RE"
}

{
  "categories": [
    "English abbreviations",
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English proper nouns",
    "English symbols",
    "English terms containing italics",
    "English uncountable nouns",
    "Pages with 3 entries",
    "Pages with entries"
  ],
  "derived": [
    {
      "word": "co-RE"
    },
    {
      "word": "coRE"
    },
    {
      "word": "co-RE-complete"
    },
    {
      "word": "RE-complete"
    }
  ],
  "etymology_number": "2",
  "etymology_templates": [
    {
      "args": {
        "1": "en"
      },
      "expansion": "Abbreviation",
      "name": "abbrev"
    }
  ],
  "etymology_text": "Abbreviations.",
  "forms": [
    {
      "form": "REs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "RE (countable and uncountable, plural REs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "the class of decision problems for which a “yes” answer can be verified by a Turing machine in a finite amount of time. See more at RE (complexity) on Wikipedia.Wikipedia",
          "word": "recursively enumerable"
        }
      ],
      "categories": [
        "English initialisms",
        "en:Theory of computing"
      ],
      "glosses": [
        "Initialism of recursively enumerable; the class of decision problems for which a “yes” answer can be verified by a Turing machine in a finite amount of time. See more at RE (complexity) on Wikipedia.Wikipedia"
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "theory",
          "theory"
        ],
        [
          "computational complexity theory",
          "computational complexity theory"
        ],
        [
          "recursively enumerable",
          "recursively enumerable#English"
        ],
        [
          "class",
          "class"
        ],
        [
          "Turing machine",
          "Turing machine"
        ],
        [
          "finite",
          "finite"
        ],
        [
          "RE (complexity)",
          "w:RE (complexity)"
        ],
        [
          "Wikipedia",
          "w:RE (complexity)"
        ]
      ],
      "qualifier": "computational complexity theory",
      "raw_glosses": [
        "(computing theory, computational complexity theory) Initialism of recursively enumerable; the class of decision problems for which a “yes” answer can be verified by a Turing machine in a finite amount of time. See more at RE (complexity) on Wikipedia.Wikipedia"
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "computing",
        "computing-theory",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "religious education"
        }
      ],
      "categories": [
        "English initialisms"
      ],
      "glosses": [
        "Initialism of religious education."
      ],
      "links": [
        [
          "religious",
          "religious#English"
        ],
        [
          "education",
          "education#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ]
    },
    {
      "alt_of": [
        {
          "word": "rare earth"
        }
      ],
      "categories": [
        "English initialisms"
      ],
      "glosses": [
        "Initialism of rare earth."
      ],
      "links": [
        [
          "rare earth",
          "rare earth#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ]
    },
    {
      "alt_of": [
        {
          "word": "response element"
        }
      ],
      "categories": [
        "English initialisms",
        "en:Biochemistry",
        "en:Genetics"
      ],
      "glosses": [
        "Initialism of response element."
      ],
      "links": [
        [
          "biochemistry",
          "biochemistry"
        ],
        [
          "genetics",
          "genetics"
        ],
        [
          "response element",
          "response element#English"
        ]
      ],
      "raw_glosses": [
        "(biochemistry, genetics) Initialism of response element."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "biochemistry",
        "biology",
        "chemistry",
        "genetics",
        "medicine",
        "microbiology",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "real estate"
        }
      ],
      "categories": [
        "English initialisms"
      ],
      "glosses": [
        "Initialism of real estate."
      ],
      "links": [
        [
          "real estate",
          "real estate#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ]
    },
    {
      "alt_of": [
        {
          "word": "renewable energy"
        }
      ],
      "categories": [
        "English initialisms"
      ],
      "glosses": [
        "Initialism of renewable energy."
      ],
      "links": [
        [
          "renewable energy",
          "renewable energy#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ]
    },
    {
      "alt_of": [
        {
          "word": "run-time environment"
        }
      ],
      "categories": [
        "English countable nouns",
        "English initialisms",
        "en:Computing"
      ],
      "glosses": [
        "Initialism of run-time environment."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "run-time",
          "run-time#English"
        ],
        [
          "environment",
          "environment#English"
        ]
      ],
      "raw_glosses": [
        "(computing, countable) Initialism of run-time environment."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "reverse engineering"
        }
      ],
      "categories": [
        "English initialisms",
        "en:Computing"
      ],
      "glosses": [
        "Initialism of reverse engineering."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "reverse engineering",
          "reverse engineering#English"
        ]
      ],
      "raw_glosses": [
        "(computing) Initialism of reverse engineering."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "reproductive endocrinologist"
        }
      ],
      "categories": [
        "English initialisms",
        "English terms with quotations",
        "en:Medicine"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              125,
              127
            ]
          ],
          "ref": "1997 April 21, Sheri Feldbusch, “Looking for a little guidance.”, in alt.support.pco (Usenet):",
          "text": "I am new to this group and have not had the courage to post many messages. I just had my second/follow-up apointment with my RE today. I have only recently been diagnosed with PCO and had the routine tests, HSG, etc.. done. Today, we talked about those results and what our next plan of action is.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Initialism of reproductive endocrinologist."
      ],
      "links": [
        [
          "medicine",
          "medicine"
        ],
        [
          "reproductive",
          "reproductive#English"
        ],
        [
          "endocrinologist",
          "endocrinologist#English"
        ]
      ],
      "raw_glosses": [
        "(medicine) Initialism of reproductive endocrinologist."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ],
      "topics": [
        "medicine",
        "sciences"
      ]
    }
  ],
  "word": "RE"
}

Download raw JSONL data for RE meaning in English (10.0kB)

{
  "called_from": "linkages/371",
  "msg": "unrecognized linkage prefix: (recursively enumerable): co-RE, coRE, co-RE-complete, RE-complete desc=recursively enumerable rest=co-RE, coRE, co-RE-complete, RE-complete cls=romanization cls2=romanization e1=True e2=False",
  "path": [
    "RE"
  ],
  "section": "English",
  "subsection": "noun",
  "title": "RE",
  "trace": ""
}

This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2026-06-12 from the enwiktionary dump dated 2026-06-01 using wiktextract (e79dea5 and 7f4db16). 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.