noun Sep·tem·ber \sep-ˈtem-bər, səp-\

: the ninth month of the year

Full Definition of SEPTEMBER

:  the ninth month of the Gregorian calendar

Examples of SEPTEMBER

  1. The weather has been very mild during the past two Septembers.


Middle English Septembre, from Anglo-French & Old English, both from Latin September (seventh month), from septem seven — more at seven
First Known Use: before 12th century

Other Calendar Terms

antedate, estival, gloaming, luster, sesquicentennial

Rhymes with SEPTEMBER

SEPTEMBER Defined for Kids


noun Sep·tem·ber \sep-ˈtem-bər\

Definition of SEPTEMBER for Kids

:  the ninth month of the year

Word History of SEPTEMBER

The earliest Roman calendar had only ten months and began with the month of March. The seventh month was called in Latin September, a word which combines the Latin words for seven (septem), month (mens), and a final word-forming element -ri-. The name was kept—and eventually borrowed by English—after September became the ninth of twelve Roman months.


Next Word in the Dictionary: September elmPrevious Word in the Dictionary: septavalentAll Words Near: September
July 04, 2015
stringent Hear it
rigorous, strict, or severe
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