Etymology

September

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Today it means: The ninth month of the Gregorian calendar, following August and preceding October, containing the southward equinox. Full definition →

Old French septembre ← Latin September
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The story

  1. Latin · derived fromSeptember“seventh month”
  2. Old French · derived fromseptembre
  3. English todaySeptember

PIE word *septḿ̥ Etymology tree Proto-Afroasiatic *sṗɣ? Proto-Semitic *šabʕ-bor.? Proto-Indo-European *septḿ̥ Proto-Italic *septəm Latin septem Latin September Old French septembreder. Old English Middle English English September From Middle English, from late Old English, from Old French septembre, Latin September (“seventh month”), from septem (“seven”), which see; September was the seventh month in the Roman calendar.

Etymology from Wiktionary, CC BY-SA 4.0.