nomen conservandum

noun

no·​men con·​ser·​van·​dum ˈnō-mən-ˌkän(t)-sər-ˈvan-dəm 

plural nomina conservanda ˈnä-mə-nə-ˌkän(t)-sər-ˈvan-də 

ˈnō-

: a biological taxonomic name that is preserved by special sanction in exception to the usual rules

Word History

Etymology

New Latin, name to be kept

First Known Use

1916, in the meaning defined above