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s the common yellow butterfly of the Eastern United States. Amorphous sulphur (Chem.), an elastic variety of sulphur of a resinous appearance, obtained by pouring melted sulphur into water. On standing, it passes back into a brittle crystalline modification. -- Liver of sulphur. (Old Chem.) See Hepar. -- Sulphur acid…

A thin, elastic, uniformly light-colored tobacco leaf, raised in Sumatra and extensively used for cigar wrappers.

here, acting upon a liquid, as oil, in the lower portion of the instrument, compresses an elastic gas in the upper part.

es of aspiration. It consists of a small cylindrical barrel and piston, or a bulb of soft elastic material, with or without valves, and with a nozzle which is sometimes at the end of a flexible tube; -- used for injecting animal bodies, cleansing wounds, etc. Garden syringe. See Garden.

A shallow metallic cup or drum, with a thin elastic membrane supporting a writing lever. Two or more of these are connected by an India rubber tube, and used to transmit and register the movements of the pulse or of any pulsating artery.

particles of a body, as a gas, tend to recede from each other and occupy a larger space; elastic force; elasticity; as, the tension of vapor; the tension of air.

isting of two parts, or long shafts, jointed together at or near one end, or united by an elastic bow, used for handling things, especially hot coals or metals; -- often called a pair of tongs.

t constructs a triangular web, or net, usually composed of four radii crossed by a double elastic fiber. The spider holds the thread at the apex of the web and stretches it tight, but lets go and springs the net when an insect comes in contact with it.

Resembling a tub; specifically sounding dull and without resonance, like a tub; wanting elasticity or freedom of sound; as, a tubby violin.

A Mexican and Central American tree (Castilloa elastica and C. Markhamiana) related to the breadfruit tree. Its milky juice contains caoutchouc. Called also ule tree.

formed of silk, cotton, or other fabric, extended on strips of whalebone, steel, or other elastic material, inserted, or fastened to, a rod or stick by means of pivots or hinges, in such a way as to allow of being opened and closed with ease. See Parasol. Underneath the umbrella's oily shed. Gay.

A motion to and fro, up and down, or from side to side, in any fluid or elastic medium, propagated continuously among its particles, but with no translation of the particles themselves in the direction of the propagation of the wave; a wave motion; a vibration.

A joint or other connection uniting parts of machinery, or the like, as the elastic pipe of a tender connecting it with the feed pipe of a locomotive engine; especially, a pipe fitting for connecting pipes, or pipes and fittings, in such a way as to facilitate disconnection.

Intended for the treatment of varicose veins; -- said of elastic stockings, bandages. and the like.

imitation of velvet, made of cotton. -- Velvet cork, the best kind of cork bark, supple, elastic, and not woody or porous. -- Velvet crab a European crab (Portunus puber). When adult the black carapace is covered with a velvety pile. Called also lady crab, and velvet fiddler. -- Velvet dock (Bot.), the common mullei…

To move to and fro, or from side to side, as a pendulum, an elastic rod, or a stretched string, when disturbed from its position of rest; to swing; to oscillate.

A limited reciprocating motion of a particle of an elastic body or medium in alternately opposite directions from its position of equilibrium, when that equilibrium has been disturbed, as when a stretched cord or other body produces musical notes, or particles of air transmit sounds to the ear. The path of the particle…

, extended or extensible in the direction of the axis of the coil, in which direction its elastic force is exerted and employed.

The act or process of imparting to caoutchouc, gutta-percha, or the like, greater elasticity, durability, or hardness by heating with sulphur under pressure.

A vibration propagated from particle to particle through a body or elastic medium, as in the transmission of sound; an assemblage of vibrating molecules in all phases of a vibration, with no phase repeated; a wave of vibration; an undulation. See Undulation.