'Hypoplastron' definitions:

Definition of 'Hypoplastron'

From: GCIDE

Hypoplastron \Hy`po*plas"tron\, n.; pl. Hypoplastra. [Pref. hypo- + plastron.] (Anat.) The third lateral plate in the plastron of turtles; -- called also hyposternum. [1913 Webster]