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.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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