hydrozoan noun & adjective. [hʌɪdrǝ(ʊ)'zǝʊǝn] L19.
[from mod. Latin Hydrozoa (see below), from HYDRO- + Greek zōia pl. of zōion animal.]
Zoology.
A. noun. A coelenterate of the class Hydrozoa, comprising organisms that are mostly marine and colonial with polyp and medusoid stages in the life cycle. L19.
b. adjective. Of or pertaining to the class Hydrozoa. L19.

■ hydrozoic adjective M19.

■ hydrozoon noun, pl. -zoa, = HYDROZOAN noun (usu. in pl.) M19.

[TahlilGaran] English Dictionary ▲