See Ect-. [ 1913 Webster ]
n. [ Ecto- + Gr. &unr_; bud, germ. ] (Biol.)
‖n.;
n. [ Ecto- + Gr. &unr_; bladder. ] (Zoöl.) The outside covering of the Bryozoa. [ 1913 Webster ]
n. [ Ecto- + -derm. ] (Biol.)
a. [ Ecto- + Gr. &unr_; the yolk of an egg. ] (Biol.) Having the food yolk, at the commencement of segmentation, in a peripheral position, and the cleavage process confined to the center of the egg;
n. [ Ecto- + -mere. ] (Biol.) The more transparent cells, which finally become external, in many segmenting ova, as those of mammals. [ 1913 Webster ]