'Inflectional' definitions:

Definition of 'inflectional'

From: WordNet
adjective
Characterized by inflections indicating grammatical distinctions; "inflectional morphology is used to indicate number and case and tense and person etc." [ant: derivational]

Definition of 'Inflectional'

From: GCIDE
  • Inflectional \In*flec"tion*al\, a. Of or pertaining to inflection; having, or characterized by, inflection. --Max M["u]ller. [1913 Webster]