week Meaning, Definition & Usage

  1. noun any period of seven consecutive days
    hebdomad.
    • it rained for a week
  2. noun hours or days of work in a calendar week
    workweek.
    • they worked a 40-hour week
  3. noun a period of seven consecutive days starting on Sunday
    calendar week.

WordNet

Week noun
Etymology
OE. weke, wike, woke, wuke AS. weocu, wicu, wucu; akin to OS. wika, OFries. wike, D. week, G. woche, OHG. wohha, wehha, Icel. vika, Sw. vecka, Dan. uge, Goth. wik, probably originally meaning, a succession or change, and akin to G. wechsel change, L. vicis turn, alternation, and E. weak. Cf. Weak.
Definitions
  1. A period of seven days, usually that reckoned from one Sabbath or Sunday to the next.
    I fast twice in the week. Luke xviii. 12.
    ✍ Although it [the week] did not enter into the calendar of the Greeks, and was not introduced at Rome till after the reign of Theodesius, it has been employed from time immemorial in almost all Eastern countries. Encyc. Brit.

Webster 1913