hydrozoan

noun hy·dro·zo·an \ˌhī-drə-ˈzō-ən\

Definition of HYDROZOAN

: any of a class (Hydrozoa) of coelenterates that includes solitary and colonial polyps and jellyfishes having no stomodeum or gastric tentacles

— hydrozoan adjective

See hydrozoan defined for kids

ultimately from Greek hydr- + zōion animal — more at zo-

First Known Use: 1877

Medical Dictionary

noun hy·dro·zo·an \-ˈzō-ən\

: any of the class Hydrozoa of coelenterates

—hydrozoan adjective

Next Word in the Dictionary: hydrozoonPrevious Word in the Dictionary: hydrozinciteAll Words Near: hydrozoan

What made you want to look up hydrozoan? Please tell us where you read or heard it (including the quote, if possible).

Put-downs with flair

How to use a word that (literally) drives some people nuts.

Test your vocab with our fun, fast game

Ailurophobia, and 9 other unusual fears