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Pyrometry :: Pyrometry (n.) The art of measuring degrees of heat, or the expansion of bodies by heat..

Bellows :: Bellows (n. sing. & pl.) An instrument, utensil, or machine, which, by alternate expansion and contraction, or by rise and fall of the top, draws in air through a valve and expels it through a tube for various purposes, as blowing fires, ventilating mines, or filling the pipes of an organ with wind..

Dilatometer :: Dilatometer (n.) An instrument for measuring the dilatation or expansion of a substance, especially of a fluid..

Thermostat :: Thermostat (n.) A self-acting apparatus for regulating temperature by the unequal expansion of different metals, liquids, or gases by heat, as in opening or closing the damper of a stove, or the like, as the heat becomes greater or less than is desired..

Pulmograde :: Pulmograde (a.) Swimming by the expansion and contraction, or lunglike movement, of the body, or of the disk, as do the medusae..

Choke :: Choke (v. t.) To hinder or check, as growth, expansion, progress, etc.; to stifle..

Expansion :: Expansion (n.) The operation of steam in a cylinder after its communication with the boiler has been cut off, by which it continues to exert pressure upon the moving piston..

Dilatability :: Dilatability (n.) The quality of being dilatable, or admitting expansion; -- opposed to contractibility..

Inflation :: Inflation (n.) The act or process of inflating, or the state of being inflated, as with air or gas; distention; expansion; enlargement..

Intumescence :: Intumescence (n.) The act or process of swelling or enlarging; also, the state of being swollen; expansion; tumidity; especially, the swelling up of bodies under the action of heat..

Wing :: Wing (n.) Any membranaceous expansion, as that along the sides of certain stems, or of a fruit of the kind called samara..

Inexpansible :: Inexpansible (a.) Incapable of expansion, enlargement, or extension..

Dilatable :: Dilatable (a.) Capable of expansion; that may be dilated; -- opposed to contractible; as, the lungs are dilatable by the force of air; air is dilatable by heat..

Expansion :: Expansion (n.) The developed result of an indicated operation; as, the expansion of (a + b)2 is a2 + 2ab + b2..

Thallus :: Thallus (n.) A solid mass of cellular tissue, consisting of one or more layers, usually in the form of a flat stratum or expansion, but sometimes erect or pendulous, and elongated and branching, and forming the substance of the thallogens..

Apterous :: Apterous (a.) Destitute of winglike membranous expansions, as a stem or petiole; -- opposed to alate..

Stylops :: Stylopodium (n.) An expansion at the base of the style, as in umbelliferous plants..

Rocket :: Rocket (n.) An artificial firework consisting of a cylindrical case of paper or metal filled with a composition of combustible ingredients, as niter, charcoal, and sulphur, and fastened to a guiding stick. The rocket is projected through the air by the force arising from the expansion of the gases liberated by combustion of the composition. Rockets are used as projectiles for various purposes, for signals, and also for pyrotechnic display..

Aliethmoidal :: Aliethmoidal (a.) Pertaining to expansions of the ethmoid bone or cartilage.

Leaf-footed :: Leaf-footed (a.) Having leaflike expansions on the legs; -- said of certain insects; as, the leaf-footed bug (Leptoglossus phyllopus)..

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