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Medical Term:


Pronunciation: wah'ter-shed


  1. The area of marginal blood flow at the extreme periphery of a vascular bed.
  2. Slopes in the abdominal cavity, formed by projections of the lumbar vertebrae and the pelvic brim, that determine the direction in which a free effusion gravitates when the body is supine.
© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.