ectental [医] 外[及]内胚层的
Ectental \Ec*ten"tal\, a. [Gr. 'ekto`s outside + ? inside.]
(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.