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[uh-lee-lop-uh-thee, al-uh-lop-] /ə liˈlɒp ə θi, ˌæl əˈlɒp-/
noun, Botany
suppression of growth of a plant by a toxin released from a nearby plant of the same or another species.
Origin of allelopathy
1940-45; < French allélopathie; see allele, -pathy
Related forms
[uh-lee-luh-path-ik, uh-lel-uh-] /əˌli ləˈpæθ ɪk, əˌlɛl ə-/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for allelopathy
  • The study of allelopathy as a discipline has a long and varied history.
  • Determine how variation in allelopathy affects population growth and demography.
  • allelopathy and exotic plant invasion: from molecules and genes to species interactions.
  • allelopathy is the secretion by plants of chemicals that inhibit the growth or reproduction of competing plant species.
British Dictionary definitions for allelopathy


the inhibitory effect of one living plant upon another by the release of toxic substances
Word Origin
from French allélopathie, from Greek allēl- one another + pathos suffering
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
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allelopathy in Science
  (ə-lē-lŏp'ə-thē, āl'ə-)   
The inhibition of growth in one plant species by chemicals produced by another. For example, other plants will often not grow underneath black walnut trees, since these trees produce juglone, a chemical inhibiting plant respiration.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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