class Hydrozoa

Từ điển Oxford Learners Wordfinder Dictionary

noun

coelenterates typically having alternation of generations;
hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes
• Syn:
Hydrozoa
• Hypernyms:
class
• Member Holonyms:
Cnidaria, phylum Cnidaria, Coelenterata, phylum Coelenterata
• Member Meronyms:
hydrozoan, hydroid, genus Hydra, Siphonophora, order Siphonophora,
Sertularia, genus Sertularia