Dictionary.com
Thesaurus.com

lipotropin

American  
[lip-uh-troh-pin, lahy-puh-] / ˌlɪp əˈtroʊ pɪn, ˌlaɪ pə- /

noun

Biochemistry.
  1. a large polypeptide of the pituitary gland from which endorphins and other endogenous opiates are thought to derive.


Etymology

Origin of lipotropin

First recorded in 1960–65; lipotrop(ic) + -in 2