Sediment is dirt or other matter that settles to the bottom in a liquid.(noun)
All the little dirt particles that sink to the bottom of a pond are an example of sediment.
See sediment in Webster's New World College Dictionary
Origin: Fr sédiment < L sedimentum < sedere, to sit
See sediment in American Heritage Dictionary 4
Origin: Latin sedimentum, act of settling
Origin: , from sedēre, to sit, settle; see sed- in Indo-European roots.
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