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A white, amorphous, tenacious substance resembling caoutchouc, and obtained as an insoluble residue of mastic.

Anything used for catching and retaining or communicating fire, made of some substance which takes fire readily, or remains burning some time; esp., a small strip or splint of wood dipped at one end in a substance which can be easily ignited by friction, as a preparation of phosphorus or chlorate of potassium. Match bo…

Consisting of matter; not spiritual; corporeal; physical; as, material substance or bodies. The material elements of the universe. Whewell.

Material substances in the aggregate; matter. [R. & Obs.] A. Chalmers.

One who denies the existence of spiritual substances or agents, and maintains that spiritual phenomena, so called, are the result of some peculiar organization of matter.

Material or substance used in the composition of remedies; -- a general term for all substances used as curative agents in medicine.

tion of tissue, either animal or vegetable, situated between the cells; the intercellular substance.

That of which anything is composed; constituent substance; material; the material or substantial part of anything; the constituent elements of conception; that into which a notion may be analyzed; the essence; the pith; the embodiment. He is the matter of virtue. B. Jonson.

Full of substance or matter; important. B. Jonson.

Any substance that is coarsely pulverized like meal, but not granulated. Meal beetle (Zoöl.), the adult of the meal worm. See Meal worm, below. -- Meal moth (Zoöl.), a lepidopterous insect (Asopia farinalis), the larvæ of which feed upon meal, flour, etc. -- Meal worm (Zoöl.), the larva of a beetle (Tenebrio molitor)…

), a scale insect (Coccus adonidum, and related species), covered with a white powderlike substance. It is a common pest in hothouses.

velihood, or an instrumentality at command for effecting any purpose; disposable force or substance. Your means are very slender, and your waste is great. Shak.

ing an acid related to aconitic acid, found in opium and extracted as a white crystalline substance.

An alkaloid found in opium, and extracted as a yellow amorphous substance which is easily decomposed.

A substance regarded as an anhydride of meconinic acid, existing in opium and extracted as a white crystalline substance. Also erroneously called meconina, meconia, etc., as though it were an alkaloid.

Any substance administered in the treatment of disease; a remedial agent; a remedy; physic. By medicine, life may be prolonged. Shak.

A substance through which an effect is transmitted from one thing to another; as, air is the common medium of sound. Hence: The condition upon which any event or action occurs; necessary means of motion or action; that through or by which anything is accomplished, conveyed, or carried on; specifically, in animal magnet…

ow of bones; the deep or inner portion of an organ or part; as, the medulla, or medullary substance, of the kidney; specifically, the medula oblongata.

ass from the pith to the bark. -- Medullary sheath (Anat.), the layer of white semifluid substance (myelin), between the primitive sheath and axis cylinder of a medullated nerve fiber.

se, C3H6N6, produced from several cyanogen compounds, and obtained as a white crystalline substance, -- formerly supposed to be produced by the decomposition of melam. Called also cyanuramide.