Pro*ce"li*an (?) a. [See Procele.] Anat & Zool.
Concave in front; as, procelian vertebrae, which have the anterior end of the centra concave and the posterior convex.
© Webster 1913.
Pro*ce"li*an, n. Zool.
A reptile having procelian vertebrae; one of the Procelia.
© Webster 1913.