unfitness

1. the state or condition of lacking physical or mental fitness or health.

2. in biology, the inability of an organism to produce viable offspring in a given environment. Compare fitness.

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Psychology term of the day

December 19th 2024

Thanatos

n. the personification of death and the brother of Hypnos (sleep) in Greek mythology, whose name was chosen by Sigmund Freud to designate a theoretical set of strivings oriented toward the reduction of tension and life activity (see death instinct). In Freud’s dual instinct theory, Thanatos is seen as involved in a dialectic process with Eros (love), the striving toward sexuality, continued development, and heightened experience (see life instinct). See also nirvana principle.