Find over 25,000 psychological definitions


ghrelin

n. a peptide secreted by endocrine cells in the stomach that binds to growth hormone receptors in the hypothalamus and anterior pituitary, stimulating appetite and the release of growth hormone.

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 16th 2025

onanism

onanism

n. coitus interruptus or masturbation. Onanism is named for the biblical character Onan, who “went to his brother’s wife and spilled it [his seed] on the ground” (Genesis 38:9).