The Collaborative International Dictionary
Ectolecithal
Ectolecithal \Ec`to*lec"i*thal\, a. [Ecto- + Gr. ? 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; as, ectolecithal ova.