Entry 1 sense Webster, 1913 Gymnophiona /(jĭm`nō̇*fī"ō̇*nȧ)/ · Gym·no·phi·o·na · IPA 01 n. pl. An order of Amphibia, having a long, annulated, snakelike body. See Ophiomorpha. 1. An order of Amphibia, having a long, annulated, snakelike body. See Ophiomorpha.(Zool.) See: Ophiomorpha