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accretion

accumulation / growth / buildup / deposition
Noun
pl: accretions

This term describes a slow, additive process where something grows larger by the steady layering of new material. It carries a sense of inevitable, gradual buildup rather than a sudden burst of growth. In scientific contexts, it refers to the physical gathering of matter, such as cosmic dust forming a planet or ice building up on a surface. In legal and geographical contexts, it specifically denotes the natural increase of land area through water deposition. Unlike "accumulation," which can be a simple pile of items, accretion implies a structural or permanent addition that becomes part of the original whole.

Meanings

Noun

The process of growth or increase by the gradual accumulation of additional layers or matter.

"The accretion of ice on the wings of the aircraft caused it to lose lift."

Noun

The gradual increase of something through addition or accumulation over time.

"The accretion of wealth in the hands of a few families led to significant social inequality."

Noun

The process by which matter falls onto a massive object, such as a star or black hole, due to gravity.

"Astronomers study the accretion disk surrounding the supermassive black hole at the center of the galaxy."

Noun

The process by which land is added to a property through the natural action of water, such as the deposition of sediment.

"The landowner claimed ownership of the new strip of beach formed by accretion over the last decade."

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Last Updated: June 13, 2026Report an Error