• (n.) A hydroid of the family ampanularidae, characterized by having the polyps or zooids inclosed in bell-shaped calicles or hydrothecae.
Cam·pan`u·la'ri·an noun [ Latin campanula a bell.] (Zoology) A hydroid of the family Campanularidæ , characterized by having the polyps or zooids inclosed in bell-shaped calicles or hydrothecæ.