Definify.com

Webster 1913 Edition

Hydrotheca

‖

Hyˊdro-the′ca

,

Noun.

;

pl. L.

Hydrothecæ

(#)

, E.

Hydrothecas

(#)

.

[NL., fr. E.

hydra

+ Gr. [GREEK] a box.]

(Zool.)

One of the calicles which, in some Hydroidea (Thecaphora), protect the hydrants. See Illust. of

, and

.