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A covering of non-conducting material on the outside of a boiler, or steam chamber, to prevent radiation of heat. Knight.

A dark vein or spot on a lighter material, as in marble; hence, a blemish or defect; as, a cloud upon one's reputation; a cloud on a title.

To cover with cloth, leather, or other material; to bandage; patch, or mend, with a clout. And old shoes and clouted upon their feet. Josh. ix. 5. Paul, yea, and Peter, too, had more skill in . . . clouting an old tent than to teach lawyers. Latimer.

, or composed of large parts or particles; of inferior quality or appearance; not fine in material or close in texture; gross; thick; rough; -- opposed to fine; as, coarse sand; coarse thread; coarse cloth; coarse bread.

r. -- Coat of arms (Her.), a translation of the French cotte d'armes, a garment of light material worn over the armor in the 15th and 16th centuries. This was often charged with the heraldic bearings of the wearer. Hence, an heraldic achievement; the bearings of any person, taken together. -- Coat card, a card bearin…

contact between pieces of metal or other conductors loosely resting against each other is materially improved in conductivity by the influence of Hertzian waves; -- so called by Sir O. J. Lodge in 1894 on the assumption that the impact of the electic waves caused the loosely connected parts to cohere, or weld together,…

A material for cordage, matting, etc., consisting of the prepared fiber of the outer husk of the cocoanut. Homans.

A small collar; specif., a woman's collar of lace, fur, or other fancy material.

c colloid (Med.), a preparation of astringent and antiseptic substances with some colloid material, as collodion, for ready use.

vout Christians, and zealous lovers of liberty. There was never a colony formed of better materials. Ames.

sion, an organization among the people of the North, during the Civil War, which afforded material comforts to the Union soldiers, and performed services of a religious character in the field and in hospitals. -- The United States Sanitary Commission, an organization formed by the people of the North to coöperate with…

That which is compiled; especially, a book or document composed of materials gathering from other books or documents. His [Goldsmith's] compilations are widely distinguished from the compilations of ordinary bookmakers. Macaulay.

To put together in a new form out of materials already existing; esp., to put together or compose out of materials from other books or documents. He [Goldsmith] compiled for the use of schools a History of Rome. Macaulay.

d diminish the bulk of, as of a liquid or an ore; to intensify, by getting rid of useless material; to condense; as, to concentrate acid by evaporation; to concentrate by washing; -- opposed to Ant: dilute. Spirit of vinegar concentrated and reduced to its greatest strength. Arbuthnot.

The person who weighs and proportions the materials to be made into glass, and who works and tempers them.

To prepare from crude materials, as food; to invent or prepare by combining different ingredients; as, to concoct a new dish or beverage.

A rounded mass or nodule produced by an aggregation of the material around a center; as, the calcareous concretions common in beds of clay.

A composition of different materials. [Obs.] A new confection of mold. Bacon.

e or half-boot, coming above the ankle, and having the sides made in part of some elastic material which stretches to allow the boot to be drawn on and off. [U.S.] -- Congress water, a saline mineral water from the Congress spring at Saratoga, in the State of New York.

n of energy, or Conservation of force (Mech.), the principle that the total energy of any material system is a quantity which can neither be increased nor diminished by any action between the parts of the system, though it may be transformed into any of the forms of which energy is susceptible. Clerk Maxwell.…