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noun \ˈwēk\

Simple Definition of week

  • : a period of seven days

  • : any period of seven days in a row

  • : the days from Monday through Friday when people usually work

Full Definition of week

  1. 1 a :  any of a series of 7-day cycles used in various calendars; especially :  a 7-day cycle beginning on Sunday and ending on Saturday b (1) :  a week beginning with a specified day or containing a specified holiday <the week of the 18th> (2) :  a week appointed for public recognition of some cause

  2. 2 a :  any seven consecutive days b :  a series of regular working, business, or school days during each 7-day period

  3. 3 British :  a time seven days before or after a specified day <last Sunday week>

Examples of week

  1. the last week of the month

  2. I can meet you sometime next week.

  3. The menu changes each week.

  4. You can never be sure what will happen from one week to the next.

  5. The menu changes from week to week.

  6. The baby is two weeks old. [a two-week .

  7. I'll be on vacation for two weeks starting this Tuesday.

  8. That car rents for $200 a week.

  9. I arrived a week ago.

  10. It took him two weeks to paint the house.

Origin of week

Middle English weke, from Old English wicu, wucu; akin to Old High German wehha week and perhaps to Latin vicis change, alternation, Old High German wehsal exchange

First Known Use: before 12th century

WEEK Defined for Kids


noun \ˈwēk\

Definition of week

  1. 1 :  seven days in a row especially beginning with Sunday and ending with Saturday

  2. 2 :  the working or school days that come between Sunday and Saturday

Seen and Heard

What made you want to look up week? Please tell us where you read or heard it (including the quote, if possible).


February 13, 2016

a trying or distressing experience

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