[ week ]
/ wik /
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a period of seven successive days: That wallpapering I thought I could do in two days ended up taking me a whole week.
the period of seven days from Sunday through Saturday, generally understood as the common representation of a week on a calendar: The 1st of next month is a Tuesday, so the first full week will begin on the 6th.
a period of seven successive days that begins with or includes an indicated day: the week of June 3; Christmas week.
(often initial capital letter) a period of seven successive days devoted to a particular celebration, honor, cause, etc.: National Book Week.
the working days or working portion of the seven-day period; workweek: Not all American workers put in the same number of hours on the job, but a 40-hour week is the norm.
British. seven days before or after a specified day: I shall come Tuesday week. He left yesterday week.
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Origin of week

First recorded before 900; Middle English weke, Old English wice; cognate with Dutch week, Old Norse vika “week,” Gothic wikō “turn”; akin to Latin vicis (genitive) “turn” (see vice3)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use week in a sentence

British Dictionary definitions for week

/ (wiːk) /

a period of seven consecutive days, esp one beginning with SundayRelated adjective: hebdomadal
a period of seven consecutive days beginning from or including a specified dayEaster week; a week from Wednesday
the period of time within a week devoted to work
a week devoted to the celebration of a cause
mainly British seven days before or after a specified dayI'll visit you Wednesday week

Word Origin for week

Old English wice, wicu, wucu; related to Old Norse vika, Gothic wikō order
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