Accretion (science)

Accretion is increase in size by gradual addition of smaller parts. This term is used in the following fields:

In atmospheric science for growth of a precipitation particle by the collision of an ice crystal or snowflake with a supercooled liquid droplet that freezes upon impact.

In astrophysics, accretion is the gravitational process by which bodies such as planets and stars form from gas and dust. See accretion theory, accretion disc.

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See also: Accretion (science), Accretion (finance), Accretion disc, Accretion theory, Astrophysics, Atmospheric science, Gravitation, Ice crystal