Origin of tautonym

1895–1900; < Greek tautṓnymos of the same name, equivalent to tauto- tauto- + -ōnymos named; see -onym
Related formstau·to·nym·ic, tau·ton·y·mous [taw-ton-uh-muh s] /tɔˈtɒn ə məs/, adjectivetau·ton·y·my, noun
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British Dictionary definitions for tautonym


  1. biology a taxonomic name in which the generic and specific components are the same, as in Rattus rattus (black rat)
Derived Formstautonymic or tautonymous (tɔːˈtɒnɪməs), adjectivetautonymy, noun

Word Origin for tautonym

C20: from Greek tautonymos. See tauto-, -onym
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