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

Or the 7-yard touchdown reception Goff had on a pass from Amon-Ra St. Brown against the Seattle Seahawks in September? —Dan Wiederer, Chicago Tribune, 21 Jan. 2025

The dinner at Trump Tower with Lammy in September was considered a success by the British. —Sam Knight, The New Yorker, 20 Jan. 2025

In September 2024, this was upgraded to 95 Km/h (60 m/h) with identical hardware. —Sabbir Rangwala, Forbes, 20 Jan. 2025

Turning 30 this September, he’s spent nearly half his life on the ice. —Greg Carannante, Sun Sentinel, 20 Jan. 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

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.