iodopsin

n. any one of three photopigments found in the retinal cones. Each consists of 11-cis-retinal combined with one of three different opsins, each of which confers a different wavelength sensitivity on the iodopsin. Also called cone opsin. See also rhodopsin.

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Psychology term of the day

December 22nd 2024

Machiavellianism

n. a personality trait marked by a calculating attitude toward human relationships and a belief that ends justify means, however ruthless. A Machiavellian is one who views other people more or less as objects to be manipulated in pursuit of his or her goals, if necessary through deliberate deception. [Niccolò Machiavelli, who argued that an effective ruler must be prepared to act in this way]