accretion


ac·cre·tion

noun \ə-ˈkrē-shən\

: a gradual process in which layers of a material are formed as small amounts are added over time

: something that has grown or accumulated slowly : a product or result of gradual growth

Full Definition of ACCRETION

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

Examples of ACCRETION

  1. rocks formed by the slow accretion of limestone
  2. There was an accretion of ice on the car's windshield.

Origin of ACCRETION

Latin accretion-, accretio, from accrescere — more at accrue
First Known Use: 1615

ac·cre·tion

noun \ə-ˈkrē-shən\   (Medical Dictionary)

Medical Definition of ACCRETION

: 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

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