Definition of "thematic" in English

adjective

1. Relating to or having a theme (“subject”) or a topic.

   • He had a thematic collection of postage stamps with flags on them (where (UK) thematic collection is equivalent to (US) topical collection)

2. (music) Relating to a melodic subject.

3. (grammar, Indo-European studies) Of a word stem, ending in a vowel that appears in or otherwise influences the noun or verb's inflection.

4. (history) Of or relating to a theme (“subdivision of the Byzantine empire”).

noun

1. A postage stamp that is part of a thematic collection.

2. (linguistics) A case that indicates the (usually inanimate) party which is a participant to the verbal predicate where that participant does not undergo any tangible change of state.