Find over 25,000 psychological definitions


non compos mentis

in law, mentally deficient or legally insane and therefore not responsible for one’s conduct. See incompetence; insanity. Compare compos mentis.

Browse dictionary by letter

a b c d e f g h i j k l m n o p q r s t u v w x y z

Psychology term of the day

March 13th 2025

fast muscle fiber

fast muscle fiber

a type of muscle fiber found in skeletal muscle that contracts rapidly but fatigues readily. Compare slow muscle fiber.