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

Kirk was killed September 10, 2025, when he was fatally shot in front of about 3,000 people during a Turning Point USA event at Utah Valley University in Orem. — Nicki Brown, CNN Money, 11 July 2026

Wade Meckler and Tyler Heineman also had two hits apiece for the Angels, whose previous win at Minnesota was in September 2024. — Los Angeles Times, 11 July 2026

The company in September plans to announce its third vehicle model, which Nguyen said is a departure from the company’s bread-and-butter SUV lineup. — Zachary Hansen, AJC.com, 10 July 2026

The iPhone 18 Pro and other new models are projected to hit stores on Friday, September 18. — David Phelan, Forbes.com, 10 July 2026

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

• crewmember
• 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.