[scy.phis.to.ma] n, pl -mae also -mas [NL, fr. L scyphus cup + Gk stoma mouth--more at stomach] (1878): a sexually produced scyphozoan larva that ultimately repeatedly constricts transversely to form free-swimming medusae
SCYPHISTOMA
Meaning of SCYPHISTOMA in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012