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Re-Latinized from Middle English Ieneuer, from Anglo-Norman genever, from Latin iānuārius ((month) of Janus), perhaps from a Proto-Indo-European *h₁ey- (to go, a root).


  • (UK) IPA(key): /ˈd͡ʒænjʊəɹi/ or as US
  • (US) enPR: jănʹyo͞o-ĕr'ē, IPA(key): /ˈd͡ʒænjuˌɛɹi/, /ˈd͡ʒænjuˌæɹi/
  • (file)

Proper noun[edit]

January (plural Januaries or Januarys)

  1. The first month of the Gregorian calendar, following the December of the previous year and preceding February. Abbreviation: Jan or Jan.
    01/01/09 : Thursday, 1st January(,) 2009.
    American style: Thursday, January 1st, 2009.
  2. (rare) A female given name.
    • Michael Schofield, January First
      “Hi, January!” Lynn calls. “Happy birthday!”

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