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Related Terms:
Definitions:
Noun
                                                
                        
                            Hydrozoa
                        
                                                
                        
                            class Hydrozoa
                        
                                                
                                                    
                
                    
                    Definition: coelenterates typically having alternation of generations; hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes
Definition: A large group of marine animals, of the class Hydrozoa, whose life cycles contain a sexual and asexual stage