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Webster 1913 Edition

Hypostoma

{

Hy′po-stome

, ‖

Hy-pos′to-ma

, }
Noun.
[NL.
hypostoma
, fr. Gr.
ὑπό
beneath + [GREEK] mouth.]
(Zool.)
The lower lip of trilobites, crustaceans, etc.

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