[1] : The Collaborative International Dictionary of English v.0.48

week \week\, n. 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.
   a period of seven days, usually that reckoned from one
   sabbath or sunday to the next.
   1913 webster

         i fast twice in the week.                --luke xviii.
                                                  12.
   1913 webster

   note: 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.
         1913 webster

   feast of weeks. see pentecost, 1.

   prophetic week, a week of years, or seven years. --dan. ix.
      24.

   week day. see under day.
      1913 webster
see also:
weak feast of weeks pentecost prophetic week week day day 

Week >> W Words
Week, definition of term: Week
week_pag1.html

Prophetic >> P Words
Prophetic, definition of term: Prophetic
prophetic_pag1.html

Week Day >> W Words
Week Day, definition of term: Week Day
week+day_pag1.html

Calendar Week >> C Words
Calendar Week, definition of term: Calendar Week
calendar+week_pag1.html