"radian" meaning in English

See radian in All languages combined, or Wiktionary

Noun

IPA: /ˈɹeɪdiən/ Audio: LL-Q1860 (eng)-Vealhurl-radian.wav Forms: radians [plural]
Rhymes: -eɪdiən Etymology: From radius + -an. Etymology templates: {{suffix|en|radius|an}} radius + -an Head templates: {{en-noun}} radian (plural radians)
  1. (geometry) In the International System of Units, the derived unit of plane angle: the angle subtended at the centre of a circle by an arc of its circumference equal in length to the radius of the circle. Symbol: rad. Wikipedia link: radian Categories (topical): Circle, Geometry, SI units Derived forms: steradian Related terms: degree, gradian Translations (unit): радиан (radian) [masculine] (Bulgarian), radiant [masculine] (Catalan), radian [masculine] (Catalan), 弧度 (húdù) (Chinese Mandarin), radiaal [masculine] (Dutch), radiaani (Finnish), radian [masculine] (French), Radiant [masculine] (German), ακτίνιο (aktínio) [neuter] (Greek), radian (Indonesian), raidian [masculine] (Irish), radiante [masculine] (Italian), ラジアン (rajian) (Japanese), radiāns [masculine] (Latvian), radian (Malay), radian [masculine] (Polish), radiano [masculine] (Portuguese), radian (Romanian), радиан (radian) (Russian), radián [masculine] (Slovak), radian [masculine] (Slovene), radián [masculine] (Spanish), radian [common-gender] (Swedish), radyan (Tagalog), เรเดียน (ree-dîian) (Thai), radyan (Turkish), radian [masculine] (Welsh)

Inflected forms

Alternative forms

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "radius",
        "3": "an"
      },
      "expansion": "radius + -an",
      "name": "suffix"
    }
  ],
  "etymology_text": "From radius + -an.",
  "forms": [
    {
      "form": "radians",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "radian (plural radians)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -an",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Mandarin terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 7 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Bulgarian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Catalan translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Dutch translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with French translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with German translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Greek translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Indonesian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Irish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Italian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Japanese translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Latvian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Malay translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Mandarin translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Polish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Portuguese translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Romanian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Russian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Slovak translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Slovene translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Spanish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Swedish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Tagalog translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Thai translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Turkish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Welsh translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Angle",
          "orig": "en:Angle",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Circle",
          "orig": "en:Circle",
          "parents": [
            "Curves",
            "Shapes",
            "Geometry",
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Geometry",
          "orig": "en:Geometry",
          "parents": [
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "SI units",
          "orig": "en:SI units",
          "parents": [
            "Units of measure",
            "Metrology",
            "Quantity",
            "Applied sciences",
            "Mathematics",
            "Sciences",
            "Formal sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "steradian"
        }
      ],
      "glosses": [
        "In the International System of Units, the derived unit of plane angle: the angle subtended at the centre of a circle by an arc of its circumference equal in length to the radius of the circle. Symbol: rad."
      ],
      "id": "en-radian-en-noun--OcwN2-c",
      "links": [
        [
          "geometry",
          "geometry"
        ],
        [
          "International System of Units",
          "International System of Units"
        ],
        [
          "derived unit",
          "derived unit"
        ],
        [
          "plane angle",
          "plane angle"
        ],
        [
          "subtend",
          "subtend"
        ],
        [
          "centre",
          "centre"
        ],
        [
          "circle",
          "circle"
        ],
        [
          "arc",
          "arc"
        ],
        [
          "circumference",
          "circumference"
        ],
        [
          "radius",
          "radius"
        ],
        [
          "rad",
          "rad"
        ]
      ],
      "raw_glosses": [
        "(geometry) In the International System of Units, the derived unit of plane angle: the angle subtended at the centre of a circle by an arc of its circumference equal in length to the radius of the circle. Symbol: rad."
      ],
      "related": [
        {
          "word": "degree"
        },
        {
          "word": "gradian"
        }
      ],
      "topics": [
        "geometry",
        "mathematics",
        "sciences"
      ],
      "translations": [
        {
          "code": "bg",
          "lang": "Bulgarian",
          "roman": "radian",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "радиан"
        },
        {
          "code": "ca",
          "lang": "Catalan",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "radiant"
        },
        {
          "code": "ca",
          "lang": "Catalan",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "radian"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "húdù",
          "sense": "unit",
          "word": "弧度"
        },
        {
          "code": "nl",
          "lang": "Dutch",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "radiaal"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "unit",
          "word": "radiaani"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "radian"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "Radiant"
        },
        {
          "code": "el",
          "lang": "Greek",
          "roman": "aktínio",
          "sense": "unit",
          "tags": [
            "neuter"
          ],
          "word": "ακτίνιο"
        },
        {
          "code": "id",
          "lang": "Indonesian",
          "sense": "unit",
          "word": "radian"
        },
        {
          "code": "ga",
          "lang": "Irish",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "raidian"
        },
        {
          "code": "it",
          "lang": "Italian",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "radiante"
        },
        {
          "code": "ja",
          "lang": "Japanese",
          "roman": "rajian",
          "sense": "unit",
          "word": "ラジアン"
        },
        {
          "code": "lv",
          "lang": "Latvian",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "radiāns"
        },
        {
          "code": "ms",
          "lang": "Malay",
          "sense": "unit",
          "word": "radian"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "radian"
        },
        {
          "code": "pt",
          "lang": "Portuguese",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "radiano"
        },
        {
          "code": "ro",
          "lang": "Romanian",
          "sense": "unit",
          "word": "radian"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "radian",
          "sense": "unit",
          "word": "радиан"
        },
        {
          "code": "sk",
          "lang": "Slovak",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "radián"
        },
        {
          "code": "sl",
          "lang": "Slovene",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "radian"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "radián"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "unit",
          "tags": [
            "common-gender"
          ],
          "word": "radian"
        },
        {
          "code": "tl",
          "lang": "Tagalog",
          "sense": "unit",
          "word": "radyan"
        },
        {
          "code": "th",
          "lang": "Thai",
          "roman": "ree-dîian",
          "sense": "unit",
          "word": "เรเดียน"
        },
        {
          "code": "tr",
          "lang": "Turkish",
          "sense": "unit",
          "word": "radyan"
        },
        {
          "code": "cy",
          "lang": "Welsh",
          "sense": "unit",
          "tags": [
            "masculine"
          ],
          "word": "radian"
        }
      ],
      "wikipedia": [
        "radian"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈɹeɪdiən/"
    },
    {
      "audio": "LL-Q1860 (eng)-Vealhurl-radian.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/10/LL-Q1860_%28eng%29-Vealhurl-radian.wav/LL-Q1860_%28eng%29-Vealhurl-radian.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/10/LL-Q1860_%28eng%29-Vealhurl-radian.wav/LL-Q1860_%28eng%29-Vealhurl-radian.wav.ogg"
    },
    {
      "rhymes": "-eɪdiən"
    }
  ],
  "word": "radian"
}
{
  "derived": [
    {
      "word": "steradian"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "radius",
        "3": "an"
      },
      "expansion": "radius + -an",
      "name": "suffix"
    }
  ],
  "etymology_text": "From radius + -an.",
  "forms": [
    {
      "form": "radians",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "radian (plural radians)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "degree"
    },
    {
      "word": "gradian"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms suffixed with -an",
        "Entries with translation boxes",
        "Japanese terms with redundant script codes",
        "Mandarin terms with redundant transliterations",
        "Pages with 7 entries",
        "Pages with entries",
        "Rhymes:English/eɪdiən",
        "Rhymes:English/eɪdiən/3 syllables",
        "Terms with Bulgarian translations",
        "Terms with Catalan translations",
        "Terms with Dutch translations",
        "Terms with Finnish translations",
        "Terms with French translations",
        "Terms with German translations",
        "Terms with Greek translations",
        "Terms with Indonesian translations",
        "Terms with Irish translations",
        "Terms with Italian translations",
        "Terms with Japanese translations",
        "Terms with Latvian translations",
        "Terms with Malay translations",
        "Terms with Mandarin translations",
        "Terms with Polish translations",
        "Terms with Portuguese translations",
        "Terms with Romanian translations",
        "Terms with Russian translations",
        "Terms with Slovak translations",
        "Terms with Slovene translations",
        "Terms with Spanish translations",
        "Terms with Swedish translations",
        "Terms with Tagalog translations",
        "Terms with Thai translations",
        "Terms with Turkish translations",
        "Terms with Welsh translations",
        "en:Angle",
        "en:Circle",
        "en:Geometry",
        "en:SI units"
      ],
      "glosses": [
        "In the International System of Units, the derived unit of plane angle: the angle subtended at the centre of a circle by an arc of its circumference equal in length to the radius of the circle. Symbol: rad."
      ],
      "links": [
        [
          "geometry",
          "geometry"
        ],
        [
          "International System of Units",
          "International System of Units"
        ],
        [
          "derived unit",
          "derived unit"
        ],
        [
          "plane angle",
          "plane angle"
        ],
        [
          "subtend",
          "subtend"
        ],
        [
          "centre",
          "centre"
        ],
        [
          "circle",
          "circle"
        ],
        [
          "arc",
          "arc"
        ],
        [
          "circumference",
          "circumference"
        ],
        [
          "radius",
          "radius"
        ],
        [
          "rad",
          "rad"
        ]
      ],
      "raw_glosses": [
        "(geometry) In the International System of Units, the derived unit of plane angle: the angle subtended at the centre of a circle by an arc of its circumference equal in length to the radius of the circle. Symbol: rad."
      ],
      "topics": [
        "geometry",
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "radian"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈɹeɪdiən/"
    },
    {
      "audio": "LL-Q1860 (eng)-Vealhurl-radian.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/10/LL-Q1860_%28eng%29-Vealhurl-radian.wav/LL-Q1860_%28eng%29-Vealhurl-radian.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/10/LL-Q1860_%28eng%29-Vealhurl-radian.wav/LL-Q1860_%28eng%29-Vealhurl-radian.wav.ogg"
    },
    {
      "rhymes": "-eɪdiən"
    }
  ],
  "translations": [
    {
      "code": "bg",
      "lang": "Bulgarian",
      "roman": "radian",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "радиан"
    },
    {
      "code": "ca",
      "lang": "Catalan",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "radiant"
    },
    {
      "code": "ca",
      "lang": "Catalan",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "radian"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "húdù",
      "sense": "unit",
      "word": "弧度"
    },
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "radiaal"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "unit",
      "word": "radiaani"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "radian"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "Radiant"
    },
    {
      "code": "el",
      "lang": "Greek",
      "roman": "aktínio",
      "sense": "unit",
      "tags": [
        "neuter"
      ],
      "word": "ακτίνιο"
    },
    {
      "code": "id",
      "lang": "Indonesian",
      "sense": "unit",
      "word": "radian"
    },
    {
      "code": "ga",
      "lang": "Irish",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "raidian"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "radiante"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "rajian",
      "sense": "unit",
      "word": "ラジアン"
    },
    {
      "code": "lv",
      "lang": "Latvian",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "radiāns"
    },
    {
      "code": "ms",
      "lang": "Malay",
      "sense": "unit",
      "word": "radian"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "radian"
    },
    {
      "code": "pt",
      "lang": "Portuguese",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "radiano"
    },
    {
      "code": "ro",
      "lang": "Romanian",
      "sense": "unit",
      "word": "radian"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "radian",
      "sense": "unit",
      "word": "радиан"
    },
    {
      "code": "sk",
      "lang": "Slovak",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "radián"
    },
    {
      "code": "sl",
      "lang": "Slovene",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "radian"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "radián"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "unit",
      "tags": [
        "common-gender"
      ],
      "word": "radian"
    },
    {
      "code": "tl",
      "lang": "Tagalog",
      "sense": "unit",
      "word": "radyan"
    },
    {
      "code": "th",
      "lang": "Thai",
      "roman": "ree-dîian",
      "sense": "unit",
      "word": "เรเดียน"
    },
    {
      "code": "tr",
      "lang": "Turkish",
      "sense": "unit",
      "word": "radyan"
    },
    {
      "code": "cy",
      "lang": "Welsh",
      "sense": "unit",
      "tags": [
        "masculine"
      ],
      "word": "radian"
    }
  ],
  "word": "radian"
}

Download raw JSONL data for radian meaning in English (5.5kB)


This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2025-01-08 from the enwiktionary dump dated 2025-01-01 using wiktextract (9a96ef4 and 4ed51a5). 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.