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Definition of automorphism in English:

automorphism

Pronunciation /ˌɔːtə(ʊ)ˈmɔːfɪz(ə)m/

noun

rare

  • 1Mathematics
    A transformation or correspondence that relates a set, space, etc., to itself; specifically an isomorphism of a structure with itself.

  • 2The attribution of one's own characteristics to another; an instance of this.

Origin

Mid 19th century. From auto- + -morphism.