- 1. n. pl. The Acalephae; one of the classes of coelenterates, including the Hydroidea, Discophora, and Siphonophora. Source: opted
- 2. pl. of Hydrozoon Source: opted
- 3. The Acalephæ; one of the classes of coelenterates, including the Hydroidea, Discophora, and Siphonophora. Source: webster
- 4. The Acalephæ; one of the classes of coelenterates, includingthe Hydroidea, Discophora, and Siphonophora. Source: adambom
- 5. n coelenterates typically having alternation of generations; hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes n colonial coelenterates having the polyp phase dominant Source: ecdict
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coelenteratesclassesdiscophorahydroideaphasesiphonophoraacalephcolonialhydrozoonacalephaealternationbuddingdominantgenerationsgivinghydrashydroidjellyfishesmedusoidpolyprisetypically