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Meaning of speciesism

spe•cies•ism

Pronunciation: (spē'shē-ziz"um, -sē-ziz"-), [key]
— n.
  1. discrimination in favor of one species, usually the human species, over another, esp. in the exploitation or mistreatment of animals by humans.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.