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January

American  
[jan-yoo-er-ee] / ˈdʒæn juˌɛr i /

noun

  • Januaries
    plural
  1. the first month of the year, containing 31 days. Jan.


January British  
/ ˈdʒænjʊərɪ /

noun

  1. the first 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 does January mean? January is the first month of the calendar year. It has 31 days and is followed by February. It follows December, the twelfth and final month of the previous year. January is closely associated with its position at the beginning of the year. January 1 is known as New Year’s Day due to being the first day of the year. For many people, January is a time of making New Year’s resolutions—decisions to do something or make some change in the new year, especially to change or start some habit or behavior. For example, many people start new exercise routines or diets in January. In the Northern Hemisphere, January is a winter month. In the Southern Hemisphere, it is a summer month. In the U. S., the most notable holiday in January after New Year’s Day is Martin Luther King Day, which is observed on the third Monday of the month. The inaugurations of new U. S. presidents and members of Congress are also held in January. Example: People treat January as a time of new beginnings and life changes, but I like to remind them that they can do that during any month.

Other Word Forms

Noun Inflected Forms

Etymology

Origin of January

before 1000; Middle English < Latin, noun use of Jānuārius, equivalent to Jānu ( s ) Janus + -ārius -ary; replacing Middle English Genever, Jeniver < Anglo-French, Old French Genever, Jenever < Latin, as above; replacing Old English Januarius < Latin

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.

See Examples For:

He followed that by becoming England Lions' youngest century-maker, in a match against Cricket Australia in January 2025, beating his father's record.

From BBC Aug. 11, 2026

In January of each year, I update the amounts in cash and bonds based on our prior-year spending.

From The Wall Street Journal Aug. 11, 2026

He was voted out of office in June and will be replaced in January by Joanna Francescut, the former longtime assistant registrar, whom he fired.

From Los Angeles Times Aug. 11, 2026

In January 2026, Pew Research Center found that 47% of Republicans and Republican-leaning independents described Russia as an enemy of the U.S, up from 40% the year before.

From Salon Aug. 11, 2026

This is what an audience of doctors looks like when Phineas arrives in Boston in January 1850, tamping iron in hand.

From "Phineas Gage" by John Fleischman

Writing for Discover Magazine, Tom Yulsman points out that scientists expected this January to be cooler than preceding Januaries because of the ocean current cycles like El Niño and La Niña.

From Salon Feb. 6, 2025

Agents there nabbed more people last month than in the previous 12 Januaries combined.

From Washington Times Feb. 13, 2023

The two asset classes enjoyed one of the best Januaries on record.

From Reuters Feb. 6, 2023

But this year we can celebrate the very cool, and the very weird, and sometimes the just plain goofy gadgets that had us nostalgic for former Januaries in the Nevada desert.

From The Verge Jan. 7, 2022

As Van stood there waiting for the fifth-period kids to finish filing in, he flashed on a moment from nearly two Januaries earlier.

From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel

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