ectental Meaning, Definition & Usage

Ec*ten"tal adjective
Etymology
Gr. outside + inside.
Definitions
  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. C. S. Minot.

Webster 1913