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A layer of any substance covering another; a cover; a tegument; as, the coats of the eye; the coats of an onion; a coat of tar or varnish.

A coat or covering; a layer of any substance, as a cover or protection; as, the coating of a retort or vial.

alkaloid, C17H21NO4, obtained from the leaves of coca. It is a bitter, white, crystalline substance, and is remarkable for producing local insensibility to pain.

One of the opium alkaloids; a white crystalline substance, C18H21NO3, similar to and regarded as a derivative of morphine, but much feebler in its action; -- called also codeia.

A bluish violet, crystalline substance obtained in the purification of crude wood vinegar. It is regarded as a complex quinone derivative of diphenyl; -- called also cedriret.

To exist at the same time; -- sometimes followed by with. Of substances no one has any clear idea, farther than of certain simple ideas coexisting together. Locke. So much purity and integrity . . . coexisting with so much decay and so many infirmities. Warburton.

To inhere or exist together, as in one substance. Sir W. Hamilton.

An accumulation of any substance. "Collections of moisture." Whewell. "A purulent collection." Dunglison.

A substance (as albumin, gum, gelatin, etc.) which is of a gelatinous rather than a crystalline nature, and which diffuses itself through animal membranes or vegetable parchment more slowly than crystalloids do; -- opposed to crystalloid.

The active medicinal principle of colocynth; a bitter, yellow, crystalline substance, regarded as a glucoside.

The quantitative determination of the depth of color of a substance.

d (Chem.), an organic acid extracted from the columbo root as a bitter, yellow, amorphous substance.

A white, crystalline, bitter substance. See Calumbin.

The act or process of uniting by chemical affinity, by which substances unite with each other in definite proportions by weight to form distinct compounds.

To unite by affinity or natural attraction; as, two substances, which will not combine of themselves, may be made to combine by the intervention of a third.

A substance that may bee set on fire, or which is liable to take fire and burn. All such combustibles as are cheap enough for common use go under the name of fuel. Ure.

ass out or depart, as from a country, room, company, etc. "They shall come out with great substance." Gen. xv.

eize; to exact; to extort. [R.] Commissions, which compel from each The sixth part of his substance. Shak.

Containing the substance oe general principles of a subject or work in a narrow compass; abridged; summarized. More compendious and exeditious ways. Woodward. Three things be required in the oration of a man having authority -- that it be compendious, sententious, and delectable. Sir T. Elyot.

To form the substance of, or part of the substance of; to constitute. Their borrowed gold composed The calf in Oreb. Milton. A few useful things . . . compose their intellectual possessions. I. Watts.