Pro*cœ"li*an, n.
(Zoöl.) A reptile having procœlian
vertebræ; one of the Procœlia.
Pro*cœ"li*an (?), a. [See
Procœle.] (Anat & Zoöl.) Concave in
front; as, procœlian vertebræ, which have the
anterior end of the centra concave and the posterior convex.