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Alternative forms[edit]


From Middle English day, from Old English dæġ ‎(day), from Proto-Germanic *dagaz ‎(day), from Proto-Indo-European *dʰegʷʰ- ‎(to burn). Cognate with Saterland Frisian Dai ‎(day), West Frisian dei ‎(day), Dutch dag ‎(day), Low German Dag ‎(day), German Tag ‎(day), Swedish and Danish dag ‎(day), Icelandic dagur ‎(day). Cognate also with Albanian djeg ‎(to burn), Lithuanian degti ‎(to burn), Tocharian A tsäk-, Russian жечь ‎(žečʹ, to burn), дёготь ‎(djógotʹ, tar, pitch) Sanskrit दाह ‎(dāha, heat), दहति ‎(dahati, to burn), Latin foveō ‎(to warm, keep warm, incubate).

Latin diēs is a false cognate; it derives from Proto-Indo-European *dyew- ‎(to shine).



day ‎(plural days)

  1. Any period of 24 hours.
    I've been here for two days and a bit.
  2. A period from midnight to the following midnight.
    The day begins at midnight.
  3. (astronomy) Rotational period of a planet (especially Earth).
    A day on Mars is slightly over 24 hours.
  4. The part of a day period which one spends at one’s job, school, etc.
    I worked two days last week.
    • 1913, Joseph C. Lincoln, chapter 7, Mr. Pratt's Patients:
      [] if you call my duds a ‘livery’ again there'll be trouble. It's bad enough to go around togged out like a life saver on a drill day, but I can stand that 'cause I'm paid for it. What I won't stand is to have them togs called a livery. []
  5. Part of a day period between sunrise and sunset where one enjoys daylight; daytime.
    day and night;  I work at night and sleep during the day.
    • 1898, Winston Churchill, chapter 8, The Celebrity:
      The day was cool and snappy for August, and the Rise all green with a lavish nature. Now we plunged into a deep shade with the boughs lacing each other overhead, and crossed dainty, rustic bridges over the cold trout-streams, [].
  6. A specified time or period; time, considered with reference to the existence or prominence of a person or thing; age; time.
    Every dog has its day.
    • 1915, Emerson Hough, The Purchase Price, chapterI:
      This new-comer was a man who in any company would have seemed striking. [] Indeed, all his features were in large mold, like the man himself, as though he had come from a day when skin garments made the proper garb of men.
    • 1945, George Orwell, Animal Farm, chapter 6
      If they had no more food than they had had in Jones's day, at least they did not have less.
    • 2011, Kat Martin, A Song for My Mother, Vanguard Press, ISBN 9781593156565, page 200:
      In his senior year, he had run across an old '66 Chevy Super Sport headed for the junkyard, bought it for a song, and overhauled it with his dad's help, turning it into the big red muscle car it was back in its day.
  7. A period of contention of a day or less.
    The day belonged to the Allies.

Derived terms[edit]


The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.


day ‎(third-person singular simple present days, present participle daying, simple past and past participle dayed)

  1. (rare) To spend a day (in a place).
    • 2008, Richard F. Burton, Arabian Nights, in 16 volumes, page 233:
      When I nighted and dayed in Damascus town, []

See also[edit]



Middle English[edit]


From Old English dæġ.


day (plural days)

  1. day




From Old English dæġ.


day (plural days)

  1. day
  2. (in the definite singular) today
    • A’m sorry, A’ve no seen Angus the day.
      I’m sorry, I haven’t seen Angus today.