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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:

Airbus dispatched 351 planes between January and the end of June, with a noticeable uptick in recent months that analysts say should make its annual goal more attainable.

From The Wall Street Journal Jul. 29, 2026

The company analyzed international views of for-sale listings between January and March 2026.

From MarketWatch Jul. 29, 2026

While ASM International stock is still up over 30% since January, shares in the sector have been under strain in recent weeks as some investors worry that valuations and AI spending might be too high.

From The Wall Street Journal Jul. 29, 2026

Savinho had competition for a starting spot with Rayan Cherki, who joined from Lyon last summer, and Antoine Semenyo, a January signing from Bournemouth, also used on the right-hand side.

From BBC Jul. 28, 2026

SABIO, SHALE: Provide architectural archival context for immediate area surrounding coordinates 39.605829, -75.718580 from January 1, 1990, to December 31, 1999.

From "The First State of Being" by Erin Entrada Kelly

Januaries in the Hawkeye State can turn any campaign into a grueling, exasperating experience.

From Salon Jan. 11, 2024

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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