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

McIver, 39, joined Congress in September following a special election after the death of Rep. Donald Payne Jr., and won a full term in November. —Gabe Whisnant, MSNBC Newsweek, 26 June 2025

For instance, a round-trip to Panama in early September would run around $340 for its most basic options. —Phillip Molnar, San Diego Union-Tribune, 25 June 2025

The dividend of $0.96 is payable on September 10, 2025, to shareholders of record on August 26, 2025. —Dividend Channel, Forbes.com, 25 June 2025

Joni’s Jazz will be out September 5, via Rhino, in 8xLP and 4xCD box set formats. —Walden Green, Pitchfork, 25 June 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.