S / sēmĭ-sŏnans
adjective

sēmĭ-sŏnans

gen. sēmĭ-sŏnantis
halfsounding; semi-vocal; a semivowel
halfsounding, semi-vocal: littera, i. e. a semivowel, App. de Mundo, 16, 29; Ter. Carm. Her. p. 2406 P.; Isid. 1, 4, 4.