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nounone of two forms that coelenterates take: it is the free-swimming sexual phase in the life cycle of a coelenterate; in this phase it has a gelatinous umbrella-shaped body and tentaclestype of:
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relating to or resembling a medusa
Definition that contains medusoid
- hydrozoa coelenterates typically having alternation of generations; hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes
- anthozoa a large class of sedentary marine coelenterates that includes sea anemones and corals; the medusoid phase is entirely suppressed
- anthozoan sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed
- class actinozoa a large class of sedentary marine coelenterates that includes sea anemones and corals; the medusoid phase is entirely suppressed
- class anthozoa a large class of sedentary marine coelenterates that includes sea anemones and corals; the medusoid phase is entirely suppressed
- actinozoan sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed
- scyphozoan any of various usually free-swimming marine coelenterates having a gelatinous medusoid stage as the dominant phase of its life cycle
- class hydrozoa coelenterates typically having alternation of generations; hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes
- actinozoa a large class of sedentary marine coelenterates that includes sea anemones and corals; the medusoid phase is entirely suppressed