adj. 1 of or relating to subjects or topics (thematic philately; the arrangement of the anthology is thematic). 2 Mus. of melodic subjects (thematic treatment). 3 Gram. a of or belonging to a theme (thematic vowel; thematic form). b (of a form of a verb) having a thematic vowel. thematic catalogue Mus. a catalogue giving the opening themes of works as well as their names and other details. thematically adv.
[ Gk thematikos (as THEME) ]