Definition of rhematic in English:

rhematic

adjective

Linguistics
  • 1Logic. In the work of American philosopher C. S. Peirce (1839-1914): having the nature of a rheme; expressing a particular concept or idea. rare.

  • 2Linguistics. Of a part of a sentence: that provides new information about the theme or topic of an utterance or discourse, carrying the most pragmatically significant semantic content; that constitutes a rheme.

Origin

Early 19th century (in an earlier sense). From Hellenistic Greek ῥηματικός from ancient Greek ῥηματ-, ῥῆμα word, verb + -ικός.