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3 definitions found
 for watershed
From The Collaborative International Dictionary of English v.0.48 :

  Watershed \Wa"ter*shed`\, n. [Cf. G. wasserscheide; wasser water
     + scheide a place where two things separate, fr. scheiden to
     separate.]
     [1913 Webster]
     1. The whole region or extent of country which contributes to
        the supply of a river or lake.
        [1913 Webster]
  
     2. The line of division between two adjacent rivers or lakes
        with respect to the flow of water by natural channels into
        them; the natural boundary of a basin; -- called also
        divide and water parting.
        [1913 Webster +PJC]
  
     3. a point in time marking an important transition between
        two situations, or phases of an activity; a turning point.
        [PJC]

From The Collaborative International Dictionary of English v.0.48 :

  Divide \Di*vide"\, n.
     A dividing ridge of land between the tributaries of two
     streams; also called watershed and water parting. A
     divide on either side of which the waters drain into two
     different oceans is called a continental divide.
     [1913 Webster +PJC]

From WordNet (r) 3.0 (2006) :

  watershed
      n 1: a ridge of land that separates two adjacent river systems
           [syn: watershed, water parting, divide]
      2: the entire geographical area drained by a river and its
         tributaries; an area characterized by all runoff being
         conveyed to the same outlet; "flood control in the Missouri
         basin" [syn: river basin, basin, watershed, drainage
         basin, catchment area, catchment basin, drainage area]
      3: an event marking a unique or important historical change of
         course or one on which important developments depend; "the
         agreement was a watershed in the history of both nations"
         [syn: landmark, turning point, watershed]

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