01 a. Relating to, or connected with, the two primitive germ layers, the ectoderm and ectoderm; as, the “ectental line” or line of juncture of th…
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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.(Biol.)