Main Entry:

ac·cre·tion

Pronunciation:

\ə-ˈkrē-shən\

Function:

noun

Etymology:

Latin accretion-, accretio, from accrescere — more at accrue

Date:

1615

1: the process of growth or enlargement by a gradual buildup: as a: increase by external addition or accumulation (as by adhesion of external parts or particles) b: the increase of land by the action of natural forces 2: a product of accretion ; especially : an extraneous addition <accretions of grime>

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

— ac·cre·tive \ə-ˈkrē-tiv\ adjective