watershed

watershed
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 will gravitate when the body is in a supine position.

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wa·ter·shed (wawґtər-shed) 1. a ridge that directs drainage toward either side. 2. an area where the peripheries of two vascular beds meet, particularly in the brain; small anastomoses link the adjoining beds. See also watershed area, under area.

Medical dictionary. 2011.

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  • watershed — UK US /ˈwɔːtəʃed/ noun [S] ► an event or period that is important because it represents a big change in how people do or think about something: a watershed for sth/sb »The buyout was hailed on Wall Street as a watershed for private equity. a… …   Financial and business terms

  • Watershed — Альбом Opeth …   Википедия

  • Watershed — im Prime Club Köln. Dezember 2003 …   Deutsch Wikipedia

  • Watershed — Álbum de Opeth Publicación 2 de junio de 2008 …   Wikipedia Español

  • watershed — originally a term in geology referring to the flow and division of river currents, has been used since the late 19c in the figurative meaning ‘a turning point in affairs’: • In the social history of twentieth century Britain the Second World War… …   Modern English usage

  • 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… …   The Collaborative International Dictionary of English

  • watershed — index crossroad (turning point) Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • watershed — line separating waters flowing into different rivers, 1803, from WATER (Cf. water) (n.1) + SHED (Cf. shed). A loan translation of Ger. Wasser scheide. Figurative sense is attested from 1878. Meaning ground of a river system is from 1878 …   Etymology dictionary

  • watershed — ► NOUN 1) an area or ridge of land that separates waters flowing to different rivers, basins, or seas. 2) a turning point in a state of affairs. 3) Brit. the time after which programmes that are unsuitable for children are broadcast on television …   English terms dictionary

  • watershed — [wôt′ərshed΄] n. 1. a ridge or stretch of high land dividing the areas drained by different rivers or river systems ☆ 2. the area drained by a river or river system 3. a crucial turning point affecting action, opinion, etc …   English World dictionary

  • Watershed — NOTOC Watershed may refer to: * Watershed, drainage divide (non American usage) * Watershed, drainage basin (North American usage) * Watershed (algorithm), an algorithm used in image processing * Watershed area (medical), an area with overlapping …   Wikipedia

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