'Metastome' definitions:
Definition of '
Metastome
'
From:
GCIDE
Metastoma \Me*tas"to*ma\, Metastome \Met"a*stome\, n. [NL. metastoma, from Gr. meta` behind + sto`ma mouth.] (Zool.) A median elevation behind the mouth in the arthropods. [1913 Webster]
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