Week

Week

A week (/wi:k/) is a time unit equal to seven days. It is the standard time period used for cycles of rest days in most parts of the world, mostly alongside—although not strictly part of—the Gregorian calendar.

Etymology

The English word week comes from the Old English wice, which is derived from a Common Germanic *wikōn, a form of the Latin vicis that means "change".

Related Terms

• Day: A day is a unit of time. In common usage, it is an interval equal to 24 hours. It also can mean the interval between sunrise and sunset, during which a location experiences natural illumination from direct sunlight.
• Month: A month is a unit of time, used with calendars, which is approximately as long as a natural period related to the motion of the Moon.
• Year: A year is the orbital period of a planetary body, for example, the Earth, moving in its orbit around the Sun.
• Calendar: A calendar is a system of organizing days. This is done by giving names to periods of time, typically days, weeks, months and years.

See Also

• Gregorian calendar
• Time
• Timekeeping

External links

• Medical encyclopedia article on Week
• Wikipedia's article - Week

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