Main Entry: bu·pro·pi·on

Pronunciation: \byü-ˈprō-pē-ˌän, -ən\

Function: noun

: a drug administered in the form of its hydrochloride C₁₃H₁₈ClNO·HCl as an antidepressant and as an aid to stop smoking usually without the side effects of depressed libido and weight gain—see wellbutrin, zyban