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

Law enforcement in Pulaski County investigated six homicides during October, a toll that was one more than in September but continued the downward trend of homicides in the county so far this year, records showed. —Grant Lancaster, arkansasonline.com, 4 Nov. 2024

Since the arrest of Sean Combs in September, it’s been impossible to scroll very far on Twitter, TikTok, or Instagram without running into a macabre joke about the rapper and entrepreneur better known as Diddy. —Jeff Ihaza, Rolling Stone, 3 Nov. 2024

In Wisconsin, Democrat Senator Tammy Baldwin leads by 4 percentage points, down from 8 in September. —David Faris, Newsweek, 3 Nov. 2024

Figures from the Treasury Department show the federal government spent north of $6.7 trillion over the yearlong period that ended in September, running a deficit of more than $1.8 trillion during the time frame. —Aris Folley, The Hill, 3 Nov. 2024

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.