tautonym

A taxonomic designation, such as Gorilla gorilla, in which the genus and species names are the same, commonly used in zoology but no longer in botany.

A name formed by repeating one word: as, kiwi-kiwi, the apteryx; taro-taro, the Orinoco bittern; awa-awa, the milk-fish of Hawaii; specifically, in zological and botanical nomenclature, a name in which the generic and specific names are the same: as, Scomber scomber, the mackerel; Cardinalis cardinalis, the cardinal redbird; Vulpes vulpes, the European red fox.

A binomial name consisting of the same word twice, such as Bison bison.