sediment

Definitions

  • WordNet 3.6
    • v sediment settle as sediment
    • v sediment deposit as a sediment
    • n sediment matter that has been deposited by some natural process
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Webster's Revised Unabridged Dictionary
    • Sediment (Geol) The material of which sedimentary rocks are formed.
    • Sediment The matter which subsides to the bottom, from water or any other liquid; settlings; lees; dregs.
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Century Dictionary and Cyclopedia
    • n sediment The matter which settles to the bottom of water or any other liquid; settlings; lees; dregs; in geology, detrital material mechanically suspended in or deposited from water; the material of which the sedimentary rocks are composed.
    • n sediment In a steam-boiler, an internal deposit of precipitate from the feed-water, or of solid matter mechanically present, which lies as a loose or soft mud on the heating surfaces: distinguished from scale, which is a hard crystalline coating adhering to the metal.
    • sediment To allow to settle; settle: said of matter in suspension in a liquid.
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Chambers's Twentieth Century Dictionary
    • n Sediment sed′i-ment what settles at the bottom of a liquid: dregs
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Etymology

Webster's Revised Unabridged Dictionary
F. sédiment, L. sedimentum, a settling, fr. sedere, to sit, to settle. See Sit
Chambers's Twentieth Century Dictionary
L. sedimentumsedēre, to sit.

Usage

In literature:

Pour off from the sediment and keep the liquid as a stock solution in a tight barrel or keg.
"Tomato Culture: A Practical Treatise on the Tomato" by William Warner Tracy
The sugar seemed reasonably clean to look at, but when boiled the sediment was anything but clean.
"An Ohio Woman in the Philippines" by Emily Bronson Conger
They found a suspicious dark sediment at the bottom of the jar.
"Ralph on the Overland Express" by Allen Chapman
Strain it, take off the fat when cold, and remove the jelly from the sediment.
"The Cook and Housekeeper's Complete and Universal Dictionary; Including a System of Modern Cookery, in all Its Various Branches," by Mary Eaton
Free the oyster liquor from sediment, reduce it by boiling to one half; add cayenne pepper and salt.
"The Lady's Own Cookery Book, and New Dinner-Table Directory;" by Charlotte Campbell Bury
Sedimentation of sewage, 227.
"Rural Hygiene" by Henry N. Ogden
After a time, the sediment space in the bottom of the jar becomes filled with sediment, which touches the plates.
"The Automobile Storage Battery" by O. A. Witte
His urine was now of an amber colour, and deposited a slight sediment.
"Experiments and Observations on Different Kinds of Air" by Joseph Priestley
What horror to look into the muddy sediment which floats round the piratic keel!
"The Atlantic Monthly, Volume 15, No. 89, March, 1865" by Various
The sediment is, of course, being piled up out in the Gulf at a proportionate rate.
"A History of Science, Volume 5(of 5)" by Henry Smith Williams
Clean water is necessary, as the sediment deposited by impure water is very destructive to the eggs.
"Soil Culture" by J. H. Walden
Then pour off the solution, leaving the sediment behind.
"What Shall We Do Now?: Five Hundred Games and Pastimes" by Dorothy Canfield Fisher
Tell all you may; empty your flask of falsehood, then at the bottom we may find some sediment of truth.
"The Advocate" by Charles Heavysege
The Urine broke, and dropt a Sediment, for the most part, as the Fever took a favourable Turn.
"An Account of the Diseases which were most frequent in the British military hospitals in Germany" by Donald Monro
That the concretions grew in the solid sediment is proved by the manner in which lines of bedding pass through them and not round them.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7" by Various
Drain all the frying fat off, leaving a brown sediment in the pan.
"Home Pork Making" by A. W. Fulton
The finer sediment was carried farther out and deposited as mud-banks.
"Earth and Sky Every Child Should Know" by Julia Ellen Rogers
It is not an Italian sediment that breeds the tough.
"The Children of the Poor" by Jacob A. Riis
Afore the Jooblee Seesun is quite gone, I wish to rikkord my sediments with regard to the show at Gildhall.
"Punch, or the London Charivari, Volume 93, July 23, 1887." by Various
What goes on in a man's heart is a main sight harder reading than salts and sediments.
"One Of Them" by Charles James Lever
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In news:

The agency said the Kellstone Quarry is unsuitable for storage of contaminated sediment dredged from Cleveland's harbor, and would render groundwater undrinkable on the vacation island off Sandusky.
Dredging —already unpalatable to opponents who worry that toxic sediment will be disturbed, and distributed—may now prove dangerous.
Over a million yards of sediment removed.
If not, it may be transported to the offshore LA-2 sediment disposal area.
Sediment in our streams is our biggest water quality threat.
Sediment is slowly choking the river.
(AP) — Crews have been out in recent weeks collecting sediment samples from Charleston Harbor for a study needed for the $300 million deepening of the harbor shipping channel.
Preliminary tests show muck from the Cuyahoga River is getting cleaner, a development that might save the region from spending millions of dollars to store sediment dredged from Cleveland's shipping channels.
"The whole we have for the bay is based on Conowingo holding back these sediments .".
Polluting sediment spilling over dam into Chesapeake Bay.
The sediments were carried downstream and entered the AuSable, said DEC spokesman David Winchell.
Sand and other sediment overflowed from the site and traveling through local waterways and into the St Croix River.
Geological Survey watching Elwha River sediment flow to strait as 2 dams removed.
Much of the sediment is coming from the Minnesota River.
Cemetery to Use Dredged Harbor Sediment .
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In science:

Sutherland, D. N. & Tan, C. T. 1970 Sedimentation of a porous sphere Chem.
Hydrodynamic forces on steady and oscillating porous particles
Most previous models of sediment transport have focused on the equilibrium (or saturated) particle flux.
Analytical model for flux saturation in sediment transport
However, the morphodynamics of sediment landscapes emerging due to surface transport of sediment is controlled by situations out-of-equilibrium.
Analytical model for flux saturation in sediment transport
The saturation of mass density of particles entrained into transport and the relaxation of particle and fluid velocities constitute the main relevant relaxation mechanisms leading to saturation of the sediment flux.
Analytical model for flux saturation in sediment transport
Here we present a theoretical model for sediment transport which, for the first time, accounts for both these relaxation mechanisms and for the different types of sediment entrainment prevailing under different environmental conditions.
Analytical model for flux saturation in sediment transport
Our analytical treatment allows us to derive a closed expression for the saturation length of sediment flux, which is general and can thus be applied under different physical conditions.
Analytical model for flux saturation in sediment transport
One of the most important deficiencies in our understanding of the dependence of Ls on flow and sediment conditions is that it remains uncertain which mechanisms are most important in determining the saturation of the sediment mass flux.
Analytical model for flux saturation in sediment transport
This model neglects the entrainment of sediment bed particles due to fluid lift, as well as the entrainment of sediment bed particles and the deceleration of transported particles due to collisions of transported particles with the sediment bed (grain-bed collisions).
Analytical model for flux saturation in sediment transport
Section, we derive the mass and momentum conservation equations for the layer of sediments in transport, as well as the differential equation of the sediment flux in terms of the mass density and average velocity of the transported particles.
Analytical model for flux saturation in sediment transport
These equations allow us to obtain a mathematical expression for the saturation length of sediment transport, which is presented in Section III.
Analytical model for flux saturation in sediment transport
This Section also discusses how to determine the quantities appearing in the saturation length equation, which encode the attributes of sediment and flow, as well as the characteristics of sediment entrainment and particle-fluid interactions.
Analytical model for flux saturation in sediment transport
In Section IV we use our theoretical expression to perform a study of the saturation length as a function of the relevant physical quantities controlling saturation of sediment flux.
Analytical model for flux saturation in sediment transport
In this Section, we derive the equations that describe the downstream evolution of the sediment mass flux, Q, towards its equilibrium value, Qs , in sediment transport under turbulent boundary layer flow.
Analytical model for flux saturation in sediment transport
The length-scale Ls , the saturation length, characterizes the response of the sediment flux due to a change in flow conditions around the equilibrium.
Analytical model for flux saturation in sediment transport
The top of the sediment bed, which corresponds to the height at which the local particle concentration equals approximately 50% of the particle concentration deep within the bed , is located at the vertical position z = ho (x, y ).
Analytical model for flux saturation in sediment transport
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