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December

American  
[dih-sem-ber] / dɪˈsɛm bər /

noun

  1. the twelfth month of the year, containing 31 days. Dec.


December British  
/ dɪˈsɛmbə /

noun

  1. the twelfth and last month of the year, consisting of 31 days

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What is December? December is the twelfth month of the year in the Gregorian calendar. It has 31 days and is between November and January. In the Northern Hemisphere, winter begins in December, while in the Southern Hemisphere, summer begins. A solstice happens in December, often marked on December 21, although the actual day may be December 20, 21, or 22. A solstice is when the sun is the farthest from the Earth’s celestial equator. The Southern Hemisphere experiences its summer solstice, with the sun reaching the southernmost point on the celestial sphere. Naturally, the Northern Hemisphere experiences its winter solstice. Many holidays are celebrated in December, including the Budhhist Bodhi Day, the Jewish Hanukkah (though it can start in November), the Christian Christmas, and the African American Kwanzaa. Kwanzaa is a cultural holiday, while Bodhi Day, Hanukkah, and Christmas are religious holidays, though many people celebrate Hanukkah and Christmas as cultural holidays. Example: December is my favorite month because I can finally take some time off work and be with my family.

Etymology

Origin of December

before 1000; Middle English decembre < Old French < Latin december (stem decembr- ) the tenth month of the early Roman year, apparently < *dec ( em ) -membri-, equivalent to decem ten + *-membri- < mens- month + -ri- suffix (with -sr- > -br- and assimilation of nasal)

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

According to council meeting papers from December, 35 traveller pitches were needed across the district.

From BBC • May 7, 2026

Like Norway, Australia is rich in natural resources, but its sovereign wealth fund only had A$267bn as of December 2025 - less than 10% of Norway's for a population five times as big.

From BBC • May 6, 2026

LLC, owned by Affinity Gaming, is closing the Primm Center gas station and the Flying J truck stop located at Whiskey Pete’s; that casino closed in December 2024.

From Los Angeles Times • May 6, 2026

“All issues with the lender have been resolved,” Schneider said in a December email.

From MarketWatch • May 6, 2026

It was December, and there was enough rain.

From "Facing the Lion" by Joseph Lemasolai Lekuton and Herman Viola