Ectental


Also found in: Medical.

Ec`ten´tal


a.1.(Biol.) Relating to, or connected with, the two primitive germ layers, the ectoderm and ectoderm; as, the "ectental line" or line of juncture of the two layers in the segmentation of the ovum.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.