Synonyms: jellyfish
Definition: any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans
Similar words: 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
Synonyms: Portuguese man-of-war, jellyfish, man-of-war
Definition: large siphonophore having a bladderlike float and stinging tentacles
Similar words: siphonophore
Definition: a floating or swimming oceanic colony of polyps often transparent or showily colored