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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The ninth month of the year in the Gregorian calendar. See Table at calendar.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • proper n. The ninth month of the Gregorian calendar, following August and preceding October. Abbreviations: Sep or Sep., Sept or Sept.

from the GNU version of the Collaborative International Dictionary of English

  • n. The ninth month of the year, containing thurty days.

from The Century Dictionary and Cyclopedia

  • n. The ninth month of the year. When the year began with March, it was the seventh month (whence the name). Abbreviated Sept.
  • Occurring, appearing, or prevailing in September: as, the September gales.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the month following August and preceding October


Middle English Septembre, from Old French, from Latin September, the seventh month, from septem, seven; see septm̥ in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Late Old English, Latin september ("seventh month"), from Latin septem ("seven"), from Proto-Indo-European *septḿ̥ (“seven”); September was the seventh month in the Roman calendar. (Wiktionary)



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