Belief in human supremacy

Wiktionary Word definitions in Wiktionary
n. (context philosophy ethics English) An ethical stance that assigns different worth or rights to beings on the basis of their species membership, such as assigning greater rights to human beings than to other animals.

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
"discrimination against certain animals based on assumption of human superiority," first attested 1975 in Richard D. Ryder's "Victims of Science," from species + -ism .

Wikipedia Word definitions in Wikipedia
Speciesism involves the assignment of different values, rights, or special consideration to individuals solely on the basis of their species membership. The term is sometimes used by animal rights advocates, who argue that speciesism is a prejudice similar ...