coelenterates typically having alternation of generations; hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes
HYDROZOA is a
8
letter word starting with
H
and ending with
A
Definitions & Synonyms
noun -
A class of mostly marine animals in the phylum Cnidaria, composed of the orders Hydroida, Siphonophorae, Milleporina and Stylasterina, including the hydras, siphonophores and many others.