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adj. floating above or on the surface

Wikipedia English The Free Encyclopedia

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Precipitation (chemistry)
Precipitation is the creation of a solid from a solution. When the reaction occurs in a liquid solution, the solid formed is called the 'precipitate'. The chemical that causes the solid to form is called the 'precipitant'. Without sufficient force of gravity (settling) to bring the solid particles together, the precipitate remains in suspension. After sedimentation, especially when using a centrifuge to press it into a compact mass, the precipitate may be referred to as a 'pellet'. The precipitate-free liquid remaining above the solid is called the 'supernate' or 'supernatant'. Powders derived from precipitation have also historically been known as 'flowers'.

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WordNet 2.0 Dictionary

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1. a liquid lying above a sediment (floating on the surface)
(hypernym) liquid

1. of a liquid; floating on the surface above a sediment or precipitate; "the supernatant fat was skimmed off"
(similar) supported
(classification) chemistry, chemical science

Webster's Revised Unabridged Dictionary (1913)

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The liquid remaining after solids suspended in the liquid have been sedimented by gravity or by centrifugation. Contrasted with the solid sediment, or (in centrifugation) the pellet.
Swimming above; floating on the surface; as, oil supernatant on water.

Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About

Free English-Vietnamese Dictionary

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supernatant /,sju:pə'neitənt/
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