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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.

It was revealed in December the regulator had never heard from a firm handed a £1m fine - prompting questions of whether monetary penalties were enough to secure action.

From BBC • Jul. 9, 2026

The cocoa price hit a record high of 12,931 dollars a tonne in New York in December 2024.

From Barron's • Jul. 9, 2026

Growth generally occurred between December and April, then slowed during mid summer and ended by August even though photosynthesis continued.

From Science Daily • Jul. 9, 2026

In a December incident, according to Chez Xue, a child carved pictures into the surface of the table with a utensil, costing the parents $109.38.

From Los Angeles Times • Jul. 8, 2026

It was December, and there was enough rain.

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

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