form class
noun
,
Grammar
1.
a class of words or forms in a given language that have one or more grammatical features in common, as, in Latin, all masculine nouns in the nominative singular, all masculine singular nouns, all masculine nouns, or all nouns.
Origin
1920-25
British Dictionary definitions for
form class
form class
noun
1.
another term for
part of speech
2.
a group of words distinguished by common inflections, such as the weak verbs of English