Form Class Definition

noun

A class made up of words that occur in a distinctive position in constructions and have certain formal features in common, as the form class noun in English, made up of all words to which both the plural and possessive suffixes may be added.

Webster's New World

(taxonomy) A collection of organisms that is given formal recognition at the rank of class with a taxonomic name, but which is known to be an artificial group rather than a natural one.

All fungi for which sexual reproduction is unknown are assigned to the form class Deuteromycota until such reproduction is discovered in that species.

Wiktionary

Synonyms: