amensalism: Meaning and Definition of

a•men•sa•lism

Pronunciation: (ā-men'su-liz"um), [key]
— n. Ecol.
  1. a relationship between two species of organisms in which the individuals of one species adversely affect those of the other and are unaffected themselves.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.