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Floating on the surface.
n. also su·per·nate (so͞o′pər-nāt′)
The clear fluid above a sediment or precipitate.

[Latin supernatāns, supernatant-, present participle of supernatāre, to float : super-, super- + natāre, to swim, frequentative of nāre; see snā- in Indo-European roots.]


1. floating on the surface or over something
2. (Chemistry) chem (of a liquid) lying above a sediment or settled precipitate
[C17: from Latin supernatāre to float, from super- + natāre to swim]
ˌsupernaˈtation n


(ˌsu pərˈneɪt nt)

floating above or on the surface.
[1655–65; < Latin supernatant-, s. of supernatāns, present participle of supernatāre to swim above. See super-, natant]


- Means "swimming on the surface."
See also related terms for swimming.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.supernatant - the clear liquid that lies above a sediment or precipitate
liquid - a substance that is liquid at room temperature and pressure
Adj.1.supernatant - of a liquid; floating on the surface above a sediment or precipitate; "the supernatant fat was skimmed off"
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
supported - held up or having the weight borne especially from below; "supported joints in a railroad track have ties directly under the rail ends"
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References in periodicals archive ?
One treatment involved the supernatant without addition of glucose but with only a single addition of urea of 120 mg [kg.sup.-1] soil and the other treatment was a supernatant with glucose addition but without urea.
After reviewing the many applications of lipases, they discuss such topics as metagenomics and unculturable bacteria, a functional approach to constructing a metagenenomic library, the biochemical characterization of purified lipase, the genomic study of culture-dependent bacteria, and the microbial assay of culture supernatant containing crude lipase.
The culture was transferred into a 50 mL centrifuge tube and centrifuged at 4000 rpm at 4[degrees]C for 20 minutes, and the supernatant was discarded.
It was observed that similar to their levels in culture supernatant of BM-MSCs, the BM plasma of AA patients as compared to controls had lower levels of MIP-1[alpha] and higher levels of TNF-[alpha] and G-CSF with no difference in the levels of SCF and SDF-1[alpha].
The effects of 50 ul /cm2 produced supernatant of 7 days cultured fungal biomass that was purified by filtration were assayed, on the goal plant in laboratory and research greenhouse, three-fold and according to numbering method, the most necrotic was related to IRLM.LC34 strain, because destructive effects were appeared as necrosis on leaf, stem and finally lead to the death.
After centrifuging the mixture at 3000 rpm for 45 minutes, the supernatant was removed and labelled as QE-SUP or Si-SUP while the residue remaining behind was labelled as QE-RES or Si-RES, respectively.
More promising is the ability of the new test to indicate a higher sensitivity with supernatant as compared to extracted DNA prepared from the same sample (Table 1).
After this, the plasma supernatant from PRGs (clots) was put into Eppendorf tubes and stored at -80[degrees]C for later determination of GFs.
Different fractions of cell culture supernatant were resolved on 15% reducing SDS-polyacrylamide gels.
After incubation, the samples were centrifuged at 3000 x g for 20 mins to obtain pellet and supernatant fractions.