Definition of day
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
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 days the 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
Examples of day in a Sentence
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.
Recent Examples of day from the Web
There are 93 days until the first Saturday of the SEC football season, and the No. 1 93 is Alabama defensive end Jonathan Allen.
Gonzalez has been part of eMerge’s executive team since day 1, and became CEO in late 2015.
The high-intensity interval training that challenges the heart rate while burning calories combined with a schedule that keeps things interesting by mixing up workouts each day yields results that other exercises or routines don’t, Fearer explained.
OPEC Cutting Exports in 3Q x Share Embed Permalink Saudi Arabia has shipped 1.21 million barrels a day of crude to the U.S. on average so far this year, according to Bloomberg calculations based on official customs data.
This year’s version was filed Dec. 1, and six days later Humphreys cut Richard a $100,000 check.
It is believed that only 250 letters were ever actually sent using the service, but among those was one alerting the West Coast to the election of Abraham Lincoln, in seven days, a record at the time.
Greg left for work before dawn, at 4:30 a.m. A few hours later, Elizabeth got the kids ready and dropped them off at school and day care before heading to her office.
This was not a nuclear test, which he was expected to do three days ago.
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.
Origin and Etymology of day
Middle English, from Old English dæg; akin to Old High German tag day
First Known Use: before 12th century
Definition of Day
Clarence Shepard, Jr. 1874–1935 American author
Definition of Day
Thomas 1748–1789 English author
Definition of Day
William Rufus 1849–1923 American statesman and jurist
DAY Defined for English Language Learners
Definition of day for English Language Learners
: 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 Defined for Kids
Definition of day for Students
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.
Seen and Heard
What made you want to look up day? Please tell us where you read or heard it (including the quote, if possible).