What is the meaning of Thematic?

Relating to, or having a theme (subject) or a topic.

Relating to a melodic subject.

Of a word stem, ending in a vowel that appears in or otherwise influences the noun or verb's inflection.

Of or relating to a theme (subdivision of the Byzantine empire).

A postage stamp that is part of a thematic collection.

(linguistics) THM 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.

Source: wiktionary.org