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Merriam-Webster's Collegiate Dictionary ac·cre·tion 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 English Etymology accretion 1610s, from L. accretionem (nom. accretio, gen. accretionis) "a growing larger," from pp. stem of accrescere, from ad- "to" + crescere "grow" (see crescent). Oxford Advanced Learner's Dictionary-牛津双解-OALD7 accretion ac·cre·tion / E5kri:Fn / noun(technical 术语 or formal) 1. [C] a layer of a substance that is slowly added to sth 积聚层；堆积层 2. [U] the process of new layers being slowly added to sth 堆积,积聚(过程) Webster's Third New International Dictionary, Unabridged ac·cre·tion \əˈkrēshən, aˈ-\ noun (-s) Etymology: Latin accretion-, accretio increase, increment, from accretus (past participle of accrescere to increase) + -ion-, -io -ion — more at accresce 1. : the process of growth or enlargement: a. : organic growth : continued development from within b. : increase by external addition or accumulation (as by adhesion of external parts or particles) c. (1) : the increase or extension of the boundaries of land or the consequent acquisition of land accruing to the owner by the gradual or imperceptible action of natural forces (as by the washing up of sand or soil from the sea or a river or by a gradual recession of the water from the usual watermark) : accession in which the boundaries of land are enlarged by this process; sometimes : increase in the amount or extent of any kind of property or in the value of any property — compare avulsion (2) : gain to an heir or legatee by failure of a coheir or a colegatee to take his share 2. a. : the result of the process of accretion < every culture is an accretion — A.L.Kroeber > < a complex accretion of rules — Edmund Wilson > b. : the matter added; especially : an extraneous addition < accretions of grime > < the immense accretion of flesh which had descended on her in middle life — Edith Wharton > c. forestry : increment ; sometimes : increase in diameter as contrasted with increase in volume3. : concretion : coherence of separate particles |
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