noun plural -sas or -sae
- for other names see→ jellyfishExample sentences
- A medusa, or jellyfish, is part of the life cycle of just one major group of animals, the cnidarians.
- Cnidarians have two basic body forms, medusa and polyp.
- Two major adult body types characterize the phylum: the medusa is typically a mobile pelagic organism, and the polyp is typically a sessile benthic organism.