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valley

[val-ee]
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noun, plural val·leys.
  1. an elongated depression between uplands, hills, or mountains, especially one following the course of a stream.
  2. an extensive, more or less flat, and relatively low region drained by a great river system.
  3. any depression or hollow resembling a valley.
  4. a low point or interval in any process, representation, or situation.
  5. any place, period, or situation that is filled with fear, gloom, foreboding, or the like: the valley of despair.
  6. Architecture. a depression or angle formed by the meeting of two inclined sides of a roof.
  7. the lower phase of a horizontal wave motion.
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Origin of valley

1250–1300; Middle English valeie, valey < Old French valee, equivalent to val vale1 + -ee < Latin -āta, feminine of -ātus -ate1
Related formsval·ley·like, adjectivein·ter·val·ley, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for intervalley

valley

noun
  1. a long depression in the land surface, usually containing a river, formed by erosion or by movements in the earth's crust
  2. the broad area drained by a single river systemthe Thames valley
  3. any elongated depression resembling a valley
  4. the junction of a roof slope with another or with a wall
  5. (modifier) relating to or proceeding by way of a valleya valley railway
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Word Origin

C13: from Old French valee, from Latin vallis
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for intervalley

valley

n.

late 13c., from Anglo-Norman valey, Old French valee "a valley," from Vulgar Latin *vallata, from Latin vallis "valley," of unknown origin. Valley Girl (in reference to San Fernando Valley of California) was popularized 1982 in song by Frank Zappa and his daughter. Valley of Death was anglicized in Middle English as Helldale (mid-13c.).

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Online Etymology Dictionary, © 2010 Douglas Harper

intervalley in Science

valley

[vălē]
  1. A long, narrow region of low land between ranges of mountains, hills, or other high areas, often having a river or stream running along the bottom. Valleys are most commonly formed through the erosion of land by rivers or glaciers. They also form where large regions of land are lowered because of geological faults.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.