HYDROID
hydrozoan, hydroid
(noun) colonial coelenterates having the polyp phase dominant
Source: WordNet® 3.1
Etymology
Noun
hydroid (plural hydroids)
Any of many colonial coelenterates that exist mainly as a polyp; a hydrozoan
Adjective
hydroid (comparative more hydroid, superlative most hydroid)
Of or pertaining to such creatures
Anagrams
• dihydro, dihydro-, hydrido
Source: Wiktionary
Hy"droid, a. Etym: [Hydra + -oid.] (Zoöl.)
Definition: Related to, or resembling, the hydra; of or pertaining to the
Hydroidea.
– n.
Definition: One of the Hydroideas.
Source: Webster’s Unabridged Dictionary 1913 Edition