1. Noun
Any one of the acalephs, esp. one of the larger species, having a jellylike appearance. See Medusa.
2. Noun
any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans
Vocabulary classified under Biology
3. Noun
large siphonophore having a bladderlike float and stinging tentacles
Vocabulary classified under Biology
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