Metastoma

1 definition found

From The Collaborative International Dictionary of English v.0.48 [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]