Definition of accretion
1 : the process of growth or enlargement by a gradual buildup: such asa : 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
accretionaryplay \-shə-ˌner-ē, -ˌne-rē\ adjective
accretiveplay \ə-ˈkrē-tiv\ adjective
Examples of accretion in a Sentence
rocks formed by the slow accretion of limestone
There was an accretion of ice on the car's windshield.
Recent Examples of accretion from the Web
This solar system hasn't even formed planets yet; all the material in the system is concentrated in what's known as an 'accretion disk.'
To imagine how angular (or rotational) momentum is removed from an accretion disk, think of a hammer thrower spinning on the spot.
Evolution was not a sudden shift, but a gradual accretion of features and a series of mutations affecting development, the researchers said.
As with so much in Ostlund’s work, none of them come as major Hollywood-style epiphanies; a slow accretion of events chip away at a character.
Atlantia’s eventual acquisition of Abertis may lead to an earnings per share accretion of about 30 percent, Francesco Sala, an analyst at Banca Akros, said in a note to clients.
There’s no way to overstate how much this will matter to the Murdochs, and not just because of the 12 to 15 percent earnings accretion that the London firm Enders Analysis says the deal would bring within two or three years.
The oldest rocks are more than 2500 million years old and contain a record of many of the events that transpired during that vast period of geologic time, including accretion of a significant portion of Oregon and Washington.
Science is an accretion of provisional certainties.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'accretion'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Did You Know?
The slow accretion of scientific knowledge over many centuries has turned into an avalanche in our time. Any accretion of ice on a grounded jet will result in takeoff delays because of the danger it poses. The land area of the Mississippi Delta increases every year from the accretion of soil washed down the Mississippi River, though the accretions happen so slowly that it's difficult to detect any increase at all. Accretion is often used in scientific writing; its usual verb form, accrue, is more often used in financial contexts ("This figure doesn't count the accrued interest on the investments").
ACCRETION Defined for English Language Learners
Definition of accretion for English Language Learners
: 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
Medical Definition of accretion
Legal Definition of accretion
1 : the process or a result of growth or enlargement: as a : 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); also : accession in which the boundaries of land are enlarged by this process — compare avulsion, reliction b : increase in the amount or extent of any kind of property or in the value of any property accretions to a trust fund resulting from the increase in value of…securities in which its corpus is invested — In re Estate of Gartenlaub, 244 P. 348 (1926) Editor's note: Accretion in value of the principal of a trust is generally not considered income. c : enlargement of a bargaining unit by the addition of new employees
2 in the civil law of Louisiana : the passing to an heir or conjoint legatee of the right to accept a portion of a succession resulting from the failure of a coheir or colegatee to take his or her own share
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