day

noun
\ ˈdā How to pronounce day (audio) \

Definition of day

 (Entry 1 of 4)

1a : the time of light between one night and the next the shortest day of the year
b : daylight sense 1 woke up at the break of day
c : daytime sleeps during the day and works at night
2 astronomy : the period of rotation of a planet (such as earth) or a moon on its axis the length of one day on Mars
3 : the mean solar day of 24 hours beginning at midnight by mean time open seven days a week the first day of every month Take one pill two times a day.
4 : a specified day or date their wedding day the day of her birth
5 : a specified time or period : age in grandfather's day often used in plural the old daysthe days of sailing ships
6 : the conflict or contention of the day played hard and won the day
7 : the time established by usage or law for work, school, or business starts his day with a cup of coffee after a long day at school We have a busy day tomorrow.
day after day
: for an indefinite or seemingly endless number of days wore the same pants day after day
day in, day out
: for an indefinite number of successive days does the same thing at work day in, day out

Day

biographical name (1)
\ ˈdā How to pronounce Day (audio) \

Definition of Day (Entry 2 of 4)

Clarence Shepard, Jr. 1874–1935 American author

Day

biographical name (2)

Definition of Day (Entry 3 of 4)

Thomas 1748–1789 English author

Day

biographical name (3)

Definition of Day (Entry 4 of 4)

William Rufus 1849–1923 American statesman and jurist

Keep scrolling for more

Synonyms & Antonyms for day

Synonyms: Noun

Antonyms: Noun

Visit the Thesaurus for More 

Examples of day in a Sentence

Noun We're open seven days a week, 365 days a year. Payment is due on the first day of every month. “What day of the week is the 28th?” “It's a Friday.” He spent five days in the hospital. She left on Thursday and came back four days later. That was the happiest day of my life. Parenthood gets better every day. The office is closed for the day. She works eight hours a day. It costs 10 dollars a day to park there.
See More
Recent Examples on the Web: Noun The drop boxes would be open 24 hours a day but could not be placed around the county. Jessie Balmert, The Enquirer, 4 June 2021 Speedway restaurants thrilled to welcome race fans again: After a fanless race day in 2020, Speedway businesses are eager to serve Indy 500 spectators. Cheryl V. Jackson, The Indianapolis Star, 3 June 2021 This prevents needlestick injuries in nurses who have to use these syringes hundreds of times a day. James Heathers, The Atlantic, 3 June 2021 On the other side of the ledger, oil demand is inelastic and will rapidly rebound to 100m barrels a day (b/d) as economies reopen and jets fly again. Andrew Stuttaford, National Review, 3 June 2021 By the end of the year, almost 1,000 people a day are expected,Walbert said. Ryan Ori, chicagotribune.com, 3 June 2021 Other heroes, including Thor and Iron Man, will make appearances, and Doctor Strange will work his wizardry in his Ancient Sanctum several times a day. cleveland, 3 June 2021 National Trails Day is June 5, a day dedicated to outdoor advocacy and celebrating trails. Patrick Connolly, orlandosentinel.com, 3 June 2021 In Colombia, nearly five hundred people a day have died of the coronavirus over the last three weeks, the nation’s most dramatic daily death rates yet. New York Times, 2 June 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'day.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of day

Noun

before the 12th century, in the meaning defined at sense 1a

History and Etymology for day

Noun

Middle English, from Old English dæg; akin to Old High German tag day

Keep scrolling for more

Learn More about day

Time Traveler for day

Time Traveler

The first known use of day was before the 12th century

See more words from the same century

Statistics for day

Last Updated

6 Jun 2021

Cite this Entry

“Day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/day. Accessed 12 Jun. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for day

day

noun

English Language Learners Definition of day

: a period of 24 hours beginning at midnight : one of the seven time periods that make up a week
: the time of light between one night and the next : the part of the day when light from the sun can be seen
: the part of the day when people are usually most active and when most businesses are open

day

noun
\ ˈdā How to pronounce day (audio) \

Kids Definition of day

1 : the time between sunrise and sunset : daylight
2 : the time a planet or moon takes to make one turn on its axis A day on earth lasts 24 hours.
3 : a period of 24 hours beginning at midnight The offer expires in ten days.
4 : a specified day or date Tuesday is Election Day.
5 : a particular time : age There was no Internet in your grandparent's day.
6 : the time set apart by custom or law for work He works an eight-hour day.

WORD OF THE DAY

Test Your Vocabulary

Name that Thing: Dog Breeds

How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!