Look up accretion in Wiktionary, the free dictionary.

Accretion may refer to:

Science

• Accretion (astrophysics), the formation of planets and other bodies by collection of material through gravity
• Accretion (meteorology), the process by which water vapor in clouds forms water droplets around nucleation sites
• Accretion (coastal management), the process where coastal sediments return to the visible portion of the beach following storm erosion
• Accretion (geology), the increase in size of a tectonic plate by addition of material along a convergent boundary

• Accretionary wedge

Other uses

• Accretion (finance), predictable changes in the price of certain securities

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