Accretion
# Accretion

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
