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  1. all the plants or plant life of a place, taken as a whole: the vegetation of the Nile valley.
  2. the act or process of vegetating.
  3. a dull existence; life devoid of mental or social activity.
  4. Pathology. a morbid growth, or excrescence.

Origin of vegetation

1555–65; < Medieval Latin vegetātiōn- (stem of vegetātiō), equivalent to vegetāt- (see vegetate) + -iōn- -ion
Related formsveg·e·ta·tion·al, adjectiveveg·e·ta·tion·less, adjectivenon·veg·e·ta·tion, nounpre·veg·e·ta·tion, nounun·der·veg·e·ta·tion, noun

Synonyms for vegetation

See more synonyms for on Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for vegetation


  1. plant life as a whole, esp the plant life of a particular region
  2. the process of vegetating
  3. pathol any abnormal growth, excrescence, etc
  4. a vegetative existence
Derived Formsvegetational, adjectivevegetatious, adjective
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 vegetation

1560s, "act of vegetating," from Middle French végétation, from Medieval Latin vegetationem (nominative vegetatio) "a quickening, action of growing," from vegetare "grow, quicken" (see vegetable). Meaning "plant life" first recorded 1727.

Online Etymology Dictionary, © 2010 Douglas Harper

vegetation in Medicine


  1. The process of growth in plants.
  2. An abnormal bodily growth or excrescence, especially a clot composed largely of fused blood platelets, fibrin, and sometimes bacteria that is adherent to a diseased heart valve.
  3. A vegetative state of impaired consciousness.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

vegetation in Science


  1. The plants of an area or a region; plant life.
  2. An abnormal bodily accretion, especially a clot composed largely of fused blood platelets, fibrin, and sometimes bacteria, that adheres to a diseased heart valve.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.