cleavage

n. the first stage of embryonic development, in which a fertilized ovum divides repeatedly to form a mass of smaller and smaller cells (see blastula). Also called segmentation.

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Psychology term of the day

May 10th 2024

cyclopia

n. a congenital disorder characterized by the merging of the two eye orbits into a single cavity that contains one eye. Cyclopia is associated with trisomy 13.