'Thematic' definitions:

Definition of 'thematic'

From: WordNet
adjective
Relating to or constituting a topic of discourse
adjective
Of or relating to a melodic subject [ant: unthematic]

Definition of 'Thematic'

From: GCIDE
  • Thematic \The*mat"ic\, a. [Gr. ?: cf. F. th['e]matique.]
  • 1. (Gram.) Of or pertaining to the theme of a word. See Theme, n., 4. [1913 Webster]
  • 2. (Mus.) Of or pertaining to a theme, or subject. [1913 Webster]
  • Thematic catalogue (Mus.), a catalogue of musical works which, besides the title and other particulars, gives in notes the theme, or first few measures, of the whole work or of its several movements. [1913 Webster]