Semaeostomata \Se*mae`o*stom"a*ta\, n. pl. [NL., fr. Gr. ???? a
military standard + ???, ???, mouth.] (Zool.)
A division of Discophora having large free mouth lobes. It
includes {Aurelia}, and {Pelagia}. Called also {Semeostoma}.
See Illustr. under {Discophora}, and {Medusa}.
[1913 Webster] Semantic