Simple Definition of December
: the 12th and last month of the year
Full Definition of December
: the 12th month of the Gregorian calendar
Examples of december
Her birthday is in late December.
This December was not as cold as the past few Decembers have been.
Origin of december
Middle English Decembre, from Old English or Anglo-French, both from Latin December (tenth month), from decem ten — more at ten
First Known Use: before 12th century
DECEMBER Defined for Kids
Definition of December
: the twelfth month of the year
History for december
The earliest Roman calendar had only ten months and began with the month of March. The tenth and last month was called in Latin December, a word which combines the Latin words for “ten” (decem), “month” (mens), and a final word-forming element -ri-. The name was kept—and eventually borrowed by English—after December became the last of twelve Roman months.
Seen and Heard
What made you want to look up December? Please tell us where you read or heard it (including the quote, if possible).