form genus

noun

: an artificial taxonomic category established for organisms (such as imperfect fungi) of obscure true relationships

Word History

First Known Use

1873, in the meaning defined above

Medical Definition

form genus

noun

: an artificial taxonomic category established for organisms of which the true relationships are obscure due to incomplete knowledge of structure (as in some fossils) or of development or life history (as in the imperfect fungi and various animal parasites)