Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun jellyfish

2 senses of jellyfish

Sense 1
Portuguese man-of-war, man-of-war, jellyfish -- (large siphonophore having a bladderlike float and stinging tentacles)
       => siphonophore -- (a floating or swimming oceanic colony of polyps often transparent or showily colored)

Sense 2
jellyfish -- (any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans)
       => coelenterate, cnidarian -- (radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms)