Entry 2 senses · 2 variants Webster, 1913 Rhematic · Rhe·mat·ic · IPA /ɹəˈmætɪk/ a. n. 01 a. Having a verb for its base; derived from a verb; as, rhematic adjectives. 1. Having a verb for its base; derived from a verb; as, rhematic adjectives.(Gram.) 02 n. The doctrine of propositions or sentences. 1. The doctrine of propositions or sentences.