scyphozoan

English Thesaurus

1. any of various usually free-swimming marine coelenterates having a gelatinous medusoid stage as the dominant phase of its life cycle (noun.animal)

hypernym	:	cnidarian, coelenterate,
definition	:	radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms (noun.animal)

member meronym	:	class scyphozoa, scyphozoa,
definition	:	coelenterates in which the polyp stage is absent or at least inconspicuous: jellyfishes (noun.animal)