OpisthocoelianO*pis`tho*c[oe]"li*an\, Opisthocoelous \O*pis`tho*c[oe]"lous\, a. [Gr. ? behind + ? hollow,] (Anat.) Concave behind; -- applied especially to vertebr[ae] in which the anterior end of the centrum is convex and the posterior concave.
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