noun Download 🔗Share Any of many colonial coelenterates that exist mainly as a polyp; a hydrozoan Examples : "The marine biologist pointed out the fuzzy, branching hydroid attached to the seaweed, explaining that it was a colony of tiny, individual animals. " animal biology organism Chat with AIVocabulary GamePractice Reading
adjective Download 🔗Share Of or pertaining to such creatures Examples : "The diver noticed the characteristic branching pattern of hydroid colonies attached to the old pier. " animal organism biology nature Chat with AIVocabulary GamePractice Reading