'Hydrotheca' definitions:
Definition of 'Hydrotheca'
From: GCIDE
- Hydrotheca \Hy`dro*the"ca\, n.; pl. L. Hydrothec[ae], E. Hydrothecas. [NL., fr. E. hydra + Gr. ? a box.] (Zool.) One of the calicles which, in some Hydroidea (Thecaphora), protect the hydrants. See Illust. of Hydroidea, and Campanularian. [1913 Webster]