'Platycoelian' definitions:

Definition of 'Platycoelian'

From: GCIDE

Platycoelian \Plat`y*c[oe]"li*an\, a. [Platy + Gr. ? hollow.] (Anat.) Flat at the anterior and concave at the posterior end; -- said of the centra of the vertebr[ae] of some extinct dinouaurs. [1913 Webster]