Definify.com
Webster 1913 Edition
Epistome
{ ‖
E-pis′to-ma
,Ep′i-stome
, }Noun.
[NL.
epistoma
, fr. Gr. ἐπί
upon + [GREEK], [GREEK], mouth.] (Zoöl.)
(a)
The region between the antennæ and the mouth, in Crustacea.
(b)
A liplike organ that covers the mouth, in most Bryozoa. See Illust., under
Entoprocta
.