parasynonymous UK /ˌpæ.rə.sɪˈnɒ.nɪ.məs/US /ˌpæ.rə.sɪˈnɑ.nɪ.məs/ adjective4 •Having common meaning. More specifically, terms (words or phrases) T and T′ are parasynonyms if. •S₁ is a sense of T and S₂ is a sense of T′. •S₁ is similar to S₂, but not identical. •Relating to parasynonymy.