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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
Hydroidea
, and Campanularian
.