What does "inflective" mean?

Inflective: (Gram.) Inflectional; characterized by variation, or change in form, to mark case, tense, etc.; subject to inflection. Inflective language (Philol.), a language like the Greek or Latin, consisting largely of stems with variable terminations or suffixes which were once independent words. English is both agglutinative, as, manlike, headache, and inflective, as, he, his, him. Cf. Agglutinative.