accretion

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accretion

1. Botany the growing together of normally separate plant or animal parts
2. Pathol
a. abnormal union or growing together of parts; adhesion
b. a mass of foreign matter collected in a cavity
3. Law an increase in the share of a beneficiary in an estate, as when a co-beneficiary fails to take his share
4. Astronomy the process in which matter under the influence of gravity is attracted to and increases the mass of a celestial body. The matter usually forms an accretion disc around the accreting object
5. Geology the process in which a continent is enlarged by the tectonic movement and deformation of the earth's crust

accretion

(aggregation) The increase in mass of a body by the addition of smaller bodies that collide and stick to it. The relative velocity of any two colliding bodies must be low enough for them to coalesce on impact rather than fly apart. Once a large enough body forms, its gravitational attraction accelerates the accretion process. Accreting objects in the Universe are numerous and diverse. They include protoplanets, protostars, black holes, and X-ray binaries. The accretion process is thought to occur generally in the form of a disk. Accretion is now assumed to have had an important role in the formation of the planets from swarms of dust grains. In the outer Solar System the grains were like dirty snowflakes and thus accretion was accelerated. See Solar System, origin.

accretion

[ə′krē·shən]
(astronomy)
A process in which a star gathers molecules of interstellar gas to itself by gravitational attraction.
(civil engineering)
Artificial buildup of land due to the construction of a groin, breakwater, dam, or beach fill.
(geology)
Gradual buildup of land on a shore due to wave action, tides, currents, airborne material, or alluvial deposits.
The process whereby stones or other inorganic masses add to their bulk by adding particles to their surfaces. Also known as aggradation.
(meteorology)
The growth of a precipitation particle by the collision of a frozen particle (ice crystal or snowflake) with a supercooled liquid droplet which freezes upon contact.
References in periodicals archive ?
At Accretive Health, we are inspired daily by those we serve and are driven to succeed for our partner clients so they can continue to meet the vital healthcare needs of their communities.
One would expect that the Big Four (4) would have dominated this market, but it is clear by our client base, that Accretive Solutions is well-recognized for its credentials in this sector.
About Accretive Health Accretive Health is inspired by, and driven to succeed for, its partner clients so they can continue to meet the healthcare needs of their communities.
On this news, shares of Accretive declined almost 20% on heavy trading volume.
Unlike traditional business intelligence or Big Data analytic approaches that often present confusing and flawed results that cannot be trusted to support executive level decisions, Accretive delivers an unprecedented prediction success rate -- within one to three percent of reality.
Joseph Services,” said Ankit Shah, an Accretive Health employee who organized the event as part of Accretive Helping Hands.
On February 26, 2013, Accretive Health announced that it would postpone the release of fourth quarter and full-year financial results because of concerns related to its revenue recognition practices under its revenue cycle management agreements with its customers.
com)-- Accretive Health employees at the company's Shared Service Center in Kalamazoo, Mich.
CHICAGO, May 1, 2012 /PRNewswire/ -- Hagens Berman today announced that it is investigating Accretive Health Inc.
The Shuman Law Firm today announced that it is investigating potential claims against certain officers and directors of Accretive Health, Inc.
Recently, Accretive Helping Hands, the not-for-profit organization led be Accretive Health employees, provided fresh baked cookies for the 16 families that stay at the 86-room facility to be near their children in the hospital.
today announced it has signed a definitive agreement to acquire Accretive Commerce Inc.