nomen dubium

noun
nomen du·​bi·​um | \ -ˈdü-bē-əm How to pronounce nomen dubium (audio) , -ˈdyü-\
plural nomina dubia\ -​ˈdü-​bē-​ə How to pronounce nomina dubia (audio) , -​ˈdyü-​ \

Definition of nomen dubium

: a taxonomic name that cannot be assigned with certainty to any taxonomic group because the description is insufficient for identification and the original specimens no longer exist

First Known Use of nomen dubium

1915, in the meaning defined above

History and Etymology for nomen dubium

New Latin, doubtful name

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The first known use of nomen dubium was in 1915

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