
1) Biological nomenclature
Found on
https://www.crosswordclues.com/clue/tautonym

A tautonym is a scientific name of a species in which both parts of the name have the same spelling, for example Bison bison. The first part of the name is the name of the genus and the second part is referred to as the specific epithet in the International Code of Nomenclature for algae, fungi, and plants and the specific name in the Internationa...
Found on
http://en.wikipedia.org/wiki/Tautonym

taxonomic name in which genus and species are the same
Found on
http://phrontistery.info/t.html

tautonym, tautonymous 1. A scientific name in which the same word is used for genus and species (Chloris chloris; the greenfinch). It is said that this practice is no longer approved by the International Code of Botanical Nomenclature. 2. A taxonomic designation; such as, Gorilla gorilla and Apus apus (common swift); in which the genus and species...
Found on
http://www.wordinfo.info/words/index/info/view_unit/2091/2
No exact match found.