germ layer

any of the three layers of cells in an animal embryo at the gastrula stage, from which the various organs and tissues develop. The outermost layer is the ectoderm, the middle layer is the mesoderm, and the inner layer is the endoderm.

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Psychology term of the day

July 27th 2024

analogies test

a test of the participant’s ability to comprehend the relationship between two items and then extend that relationship to a different situation: For example, paintbrush is to paint as pen is to ___.