Main Entry: ac·cre·tion

Pronunciation: \ə-ˈkrē-shən\

Function: noun

: the process of growth or enlargement ; especially : increase by external addition or accumulation (as by adhesion of external parts or particles)—compare apposition 1, intussusception 2

—ac·cre·tion·ary \-shə-ˌner-ē\ adjective