1. Coelenterates in which the polyp stage is absent or at least inconspicuous: jellyfishes
   - class Scyphozoa

1. Any of various usually free-swimming marine coelenterates having a gelatinous medusoid stage as the dominant phase of its life cycle
   "The moon jellyfish is a common scyphozoan found in coastal waters"

Type of: class, cnidarian, coelenterate

Part of: Cnidaria, Coelenterata, phylum Cnidaria, phylum Coelenterata

Encyclopedia: Scyphozoa