Meaning of “sediment” in the English Dictionary

"sediment" in British English

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sedimentnoun

uk /ˈsed.ɪ.mənt/ us /ˈsed.ə.mənt/

[ C or U ] a soft substance that is like a wet powder and consists of very small pieces of a solid material that have fallen to the bottom of a liquid:

There was a brown sediment in the bottom of the bottle.
sediments [ plural ]

sand, stones, etc. that slowly form a layer of rock:

It is hoped that the oil slick will sink to the seabed where it would be covered within a few years by sediments and eventually decompose.
sedimentation
noun [ U ] uk /ˌsed.ɪ.menˈteɪ.ʃən/ us /ˌsed.ə.menˈteɪ.ʃən/

(Definition of “sediment” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"sediment" in American English

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sedimentnoun [ C/U ]

us /ˈsed·ə·mənt/

solid material, such as dirt or minerals, that falls to the bottom of a liquid

(Definition of “sediment” from the Cambridge Academic Content Dictionary © Cambridge University Press)