Accretion may refer to:
Science
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Accretion (astrophysics)
In astrophysics, accretion is the accumulation of particles into a massive object by gravitationally attracting more matter, typically gaseous matter, in an accretion disk. Most astronomical objects, such as galaxies, stars, and planets, are for ...
, the formation of planets and other bodies by collection of material through gravity
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Accretion (meteorology), the process by which water vapor in clouds forms water droplets around nucleation sites
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Accretion (coastal management)
Accretion is the process of coastal sediment returning to the visible portion of a beach or foreshore after a submersion event. A sustainable
Specific definitions of sustainability are difficult to agree on and have varied in the literature ...
, the process where coastal sediments return to the visible portion of the beach following storm erosion
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Accretion (geology)
Accretion, in geology, is a process by which material is added to a tectonic plate at a subduction zone, frequently on the edge of existing continental landmasses. The added material may be sediment, volcanic arcs, seamounts, oceanic crust ...
, the increase in size of a tectonic plate by addition of material along a convergent boundary
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Accretionary wedge
An accretionary wedge or accretionary prism forms from sediments accreted onto the non- subducting tectonic plate at a convergent plate boundary. Most of the material in the accretionary wedge consists of marine sediments scraped off from the ...
Other uses
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Accretion (finance), predictable changes in the price of certain securities
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