amensalism definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A symbiotic relationship between organisms in which one species is harmed or inhibited and the other species is unaffected.
Origin: Probably a-1 + (com)mensalism.
amensalism - Science Definition
A symbiotic relationship in which one organism is harmed or inhibited and the other is unaffected. Examples of amensalism include the shading out of one plant by a taller and wider one and the inhibition of one plant by the secretions of another (known as allelopathy). Compare commensalism, mutualism, parasitism.