Definition of form class in English English dictionary
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.
A set of words that have one or more grammatical or syntactic characteristics in common, such as the class of transitive verbs in English