1. [ noun ] (zoology) any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans
Synonyms: medusan jellyfish
Related terms: coelenterate Chrysaora_quinquecirrha Aegina Cnidaria
2. [ noun ] (Greek mythology) a woman transformed into a Gorgon by Athena; she was slain by Perseus
Related terms: Gorgon Greek_mythology
3. [ noun ] (zoology) one of two forms that coelenterates take: is the free-swimming sexual stage in the life cycle of a coelenterate and has a gelatinous umbrella-shaped body and tentacles
Related terms: coelenterate Cnidaria
Similar spelling:   Meads