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To clear of sediment, as a boiler, or of air, as a steam pipe, by driving off or permitting escape.

To draw off from the lees or sediment, as wine. It is in common practice to draw wine or beer from the lees (which we call racking), whereby it will clarify much the sooner. Bacon. Rack vintage, wine cleansed and drawn from the lees. Cowell.

To sink; to settle, as sediment. [Obs.] Boyle.

Subsidence, as of a sediment. [Obs.] Bacon.

To render turbid by stirring up the dregs or sediment of; as, to roil wine, cider, etc. , in casks or bottles; to roil a spring.

nts in producing fermentation of wine, beer, etc. Saccharomyces cerevisiæ is the yeast of sedimentary beer. Also called Torula.

To sink to the bottom; to fall to the bottom, as dregs of a liquid, or the sediment of a reserveir.

Matter that subsides; settlings; sediment; lees; dregs. [Obs.] Fuller's earth left a thick settlement. Mortimer.

That which settles at the bottom of a liquid; lees; dregs; sediment. Milton. Settling day, a day for settling accounts, as in the stock market.

A fine-grained sedimentary rock of a thin, laminated, and often friable, structure. Bituminous shale. See under Bituminous.

Filth; sediment. [Prov. Eng.] Halliwell.

ee Slime, 4. Sludge hole, the hand-hole, or manhole, in a steam boiler, by means of which sediment can be removed.

The liquid remaining after solids suspended in a liquid have been sedimented by gravity or by centrifugation. Contrasted with the solid sediment, or (in centrifugation) the pellet.

A reddish crust or sediment in wine casks, consisting essentially of crude cream of tartar, and used in marking pure cream of tartar, tartaric acid, potassium carbonate, black flux, etc., and, in dyeing, as a mordant for woolen goods; -- called also argol, wine stone, etc.

Of or pertaining to the sea; -- sometimes applied to rocks formed from sediments deposited upon the sea bottom.

Having the lees or sediment disturbed; roiled; muddy; thick; not clear; -- used of liquids of any kind; as, turbid water; turbid wine. On that strong, turbid water, a small boat, Guided by one weak hand, was seen to float. Whittier.

cid is frequently deposited, on standing in a cool place, in the form of a reddish yellow sediment, nearly always crystalline. Chemically, it is composed of carbon, hydrogen, nitrogen, and oxygen, C5H4N4O3, and by decomposition yields urea, among other products. It can be made synthetically by heating together urea and…

d, a product of the decomposition, or oxidation, of indican. It is sometimes found in the sediment of pathological urines. It is soluble in ether or alcohol, giving the solution a beautiful red color. Also called indigrubin.

The foam, or troth (top yeast), or the sediment (bottom yeast), of beer or other in fermentation, which contains the yeast plant or its spores, and under certain conditions produces fermentation in saccharine or farinaceous substances; a preparation used for raising dough for bread or cakes, and making it light and puf…