September

noun

Sep·​tem·​ber sep-ˈtem-bər 

səp-

: the ninth month of the Gregorian calendar

Examples of September in a Sentence

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

Recent Examples on the Web

The Jennifer Hudson Show debuted in September 2022. —Ingrid Vasquez, People.com, 3 Apr. 2025

Springfield Antique Show & Flea Market Location: Springfield, Ohio Dates: May 16–18 and September 19–21, 2025 A popular fair that runs monthly for most of the year, the Springfield Antique Show swells to 10 times its usual size every May and September. —Sara Bliss, Better Homes & Gardens, 2 Apr. 2025

Politicians have voiced opposition since last September when the Antelope Valley was identified as Hubbart’s next home by Liberty Healthcare, a state contractor that oversees SVP cases. —Jason Kravarik, CNN Money, 2 Apr. 2025

Sketch debuted at last September’s Toronto International Film Festival to critical raves. —Chris Gardner, HollywoodReporter, 2 Apr. 2025

Word History

Etymology

Middle English Septembre, from Anglo-French & Old English, both from Latin September (seventh month), from septem seven — more at seven

First Known Use

before the 12th century, in the meaning defined above

Rhymes for September

• december
• dismember
• nonmember
• november
• remember
• ember
• member

Kids Definition

September

noun

Sep·​tem·​ber sep-ˈtem-bər 

səp-

: the ninth month of the year

Etymology

Middle English Septembre "the month of September," from Old English September and early French Septembre (both, same meaning), both from Latin September "the seventh month," from septem "seven"

Word Origin

The ancient Romans originally used a calendar which began the year with the month of March. The seventh month of the year was called September, from septem, a Latin word meaning "seven." The name was spelled Septembre when it was borrowed from early French into Middle English, but eventually the English spelling was changed to that of the original Latin.