[pip-uh-reen, -er-in] 
| a white, crystalline alkaloid, C1 7H1 9NO3, obtained from pepper and other piperaceous plants and also prepared synthetically: used as an insecticide. |
| pip·er·ine (pĭp'ə-rēn') n. A crystalline solid, C17H19NO3, extracted from black pepper and used as flavoring and as an insecticide. [Latin piper, pepper; see pepper + -ine2.] |
piperine
an organic compound classed either with the lipid family (a group consisting of fats and fatlike substances) or with the alkaloids, a family of nitrogenous compounds with marked physiological properties. It is one of the sharp-tasting constituents of the fruit of the pepper vine (Piper nigrum).
Learn more about piperine with a free trial on Britannica.com.
əˌrin