Definition of speciesism noun from the Oxford Advanced Learner's Dictionary

 

speciesism

 noun
noun
BrE BrE//ˈspiːʃiːzɪzəm//
 
; NAmE NAmE//ˈspiːʃiːzɪzəm//
 
[uncountable](disapproving)
 
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the belief that humans are more important than animals, which causes people to treat animals badly
See the Oxford Advanced American Dictionary entry: speciesism