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 teen’s remains were found in September in the trunk of a Tesla that belongs to the singer, and D4vd was arrested in April. — Marlene Lenthang, NBC news, 25 July 2026

Sam Machado and his wife, Tammy Machado, who owned the property, and Tammy Machado’s sister, Reiko Matsumura, a former Yolo County sheriff’s deputy who went on leave after the explosion and retired in September. — Daniel Lempres, Sacbee.com, 25 July 2026

Former County Executive Frank White was removed from office in a landslide vote in September 2025. — Ilana Arougheti, Kansas City Star, 25 July 2026

Investigators read aloud to Colt Gray the warrants for his arrest at the end of a lengthy police interview hours after the September 2024 shooting. — Isabel Rosales, CNN Money, 24 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.