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Definition of Term

(English) According to the Code, the use of the same word for the name of a genus and of one of its included species and/or subspecies. Absolute tautonymy is the identical spelling of a generic or subgeneric name and the specific or subspecific name of one of its originally included nominal species or subspecies. Linnaean tautonymy is the identical spelling of a new generic or subgeneric name established before 1931 and a pre-1758 name cited as a synonym of only one of the species or subspecies originally included in that genus. Virtual tautonymy is the nearly identical spelling, or the same origin or meaning, of a generic or subgeneric name and the specific or subspecific name in a binomen or trinomen (not a term regulated by the International Code of Zoological Nomenclature). (See also: Code, genus, homonym)
(French) Selon le Code, l'emploi du même mot pour le nom d'un genre et une des espèces et/ou sous-espèces incluse(s) dans ce genre. (See also: Code, genus, homonym)
(Portuguese) Do Código, o uso da mesma palavra para o nome do género e para a espécie e/ou subespécie incluída. (See also: Code, genus, homonym)

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