vitamin A

a fat-soluble vitamin. Its aldehyde,retinal, is a component of the photopigments in the retina. Vitamin A deficiency results in night blindness and other visual disorders. Also called retinol. See also visual cycle.

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Psychology term of the day

May 9th 2024

endogenous research

research that is based on information inherent in a specific area or system, without taking into account outside, independent information.