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

November 15th 2024

recurring-figures test

a test of memory in which a person is shown a series of cards featuring generally nonsensical figures or geometric forms. Some figures appear on more than one card, and the participant must try to remember whether a figure has appeared on a previous card.