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sedimentation

American  
[sed-uh-muhn-tey-shuhn] / ˌsɛd ə mənˈteɪ ʃən /

noun

  1. the deposition or accumulation of sediment.


sedimentation British  
/ ˌsɛdɪmɛnˈteɪʃən /

noun

  1. the process of formation of sedimentary rocks

  2. the deposition or production of sediment

  3. chem biochem the process by which large molecules or macroscopic particles are concentrated in a centrifugal field in a centrifuge or ultracentrifuge

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Etymology

Origin of sedimentation

First recorded in 1870–75; sediment + -ation

Explanation

The process of particles settling to the bottom of a body of water is called sedimentation. In lakes and rivers, sedimentation can sometimes cause problems for the organisms living there. The best thing about sedimentation is that it can tell geologists a lot about lakes, rivers, and rocky areas from the clues it leaves behind. Layers of sediment in rocks from past sedimentation show the action of currents, reveal fossils, and give evidence of human activity. Sedimentation can be traced back to the Latin sedimentum, "a settling or a sinking down."

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Vocabulary lists containing sedimentation

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Earlier work by the same research group showed that moringa seeds are effective throughout a full treatment cycle, including flocculation, sedimentation, and filtration.

From Science Daily • Apr. 20, 2026

Women typically store more fat beneath the skin and tend to show higher levels of inflammation-related markers such as C-reactive protein and erythrocyte sedimentation rate.

From Science Daily • Apr. 13, 2026

“If we have a really hot fire that cooks the vegetation that holds the soil together, we could have increased sedimentation, debris and ash flow,” Johnson said.

From Los Angeles Times • Aug. 6, 2024

For example, all five of the plant’s primary sedimentation tanks, which remove solids from wastewater, had been out of commission since March 2023.

From Los Angeles Times • Jul. 19, 2024

The constitution of this formation shows that conditions of sedimentation had again changed, so that sand was again deposited where the conditions had been favorable to the deposition of limestone but a short time before.

From The Geography of the Region about Devils Lake and the Dalles of the Wisconsin by Atwood, Wallace W.

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