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- Variable - a. - Having the capacity of varying or changing; capable of alternation in any manner; changeable; as, variable winds or seasons; a variable quantity.
- Variable - a. - Liable to vary; too susceptible of change; mutable; fickle; unsteady; inconstant; as, the affections of men are variable; passions are variable.
- Variable - n. - That which is variable; that which varies, or is subject to change.
- Variable - n. - A quantity which may increase or decrease; a quantity which admits of an infinite number of values in the same expression; a variable quantity; as, in the equation x2 - y2 = R2, x and y are variables.
- Variable - n. - A shifting wind, or one that varies in force.
- Variable - n. - Those parts of the sea where a steady wind is not expected, especially the parts between the trade-wind belts.
- Variableness - n. - The quality or state of being variable; variability.
- Fluxion - n. - The infinitely small increase or decrease of a variable or flowing quantity in a certain infinitely small and constant period of time; the rate of variation of a fluent; an incerement; a differential.
- Babbitt metal - - A soft white alloy of variable composition (as a nine parts of tin to one of copper, or of fifty parts of tin to five of antimony and one of copper) used in bearings to diminish friction.
- Quadrature - a. - The integral used in obtaining the area bounded by a curve; hence, the definite integral of the product of any function of one variable into the differential of that variable.
- Mean - a. - Average; having an intermediate value between two extremes, or between the several successive values of a variable quantity during one cycle of variation; as, mean distance; mean motion; mean solar day.
- Spiracle - n. - One of the external openings communicating with the air tubes or tracheae of insects, myriapods, and arachnids. They are variable in number, and are usually situated on the sides of the thorax and abdomen, a pair to a segment. These openings are usually elliptical, and capable of being closed. See Illust. under Coleoptera.
- Metalline - n. - A substance of variable composition, but resembling a soft, dark-colored metal, used in the bearings of machines for obviating friction, and as a substitute for lubricants.
- Ligroin - n. - A trade name applied somewhat indefinitely to some of the volatile products obtained in refining crude petroleum. It is a complex and variable mixture of several hydrocarbons, generally boils below 170¡ Fahr., and is more inflammable than safe kerosene. It is used as a solvent, as a carburetant for air gas, and for illumination in special lamps.
- Gradient - n. - The rate of increase or decrease of a variable magnitude, or the curve which represents it; as, a thermometric gradient.
- Cam - n. - A projecting part of a wheel or other moving piece so shaped as to give alternate or variable motion to another piece against which it acts.
- Decrement - n. - The quantity by which a variable is diminished.
- Dextrin - n. - A translucent, gummy, amorphous substance, nearly tasteless and odorless, used as a substitute for gum, for sizing, etc., and obtained from starch by the action of heat, acids, or diastase. It is of somewhat variable composition, containing several carbohydrates which change easily to their respective varieties of sugar. It is so named from its rotating the plane of polarization to the right; -- called also British gum, Alsace gum, gommelin, leiocome, etc. See Achroodextrin, and Erythrodextrin.
- Heterocera - n. pl. - A division of Lepidoptera, including the moths, and hawk moths, which have the antennae variable in form.
- Equable - a. - Uniform in action or intensity; not variable or changing; -- said of the feelings or temper.
- Erythema - n. - A disease of the skin, in which a diffused inflammation forms rose-colored patches of variable size.
- Carbohydrate - n. - One of a group of compounds including the sugars, starches, and gums, which contain six (or some multiple of six) carbon atoms, united with a variable number of hydrogen and oxygen atoms, but with the two latter always in proportion as to form water; as dextrose, C6H12O6.
- Argument - n. - The independent variable upon whose value that of a function depends.
- Dorse - n. - The Baltic or variable cod (Gadus callarias), by some believed to be the young of the common codfish.
- Mira - n. - A remarkable variable star in the constellation Cetus (/ Ceti).
- Fluent - n. - A variable quantity, considered as increasing or diminishing; -- called, in the modern calculus, the function or integral.
- Ruff - n. - A limicoline bird of Europe and Asia (Pavoncella, / Philommachus, pugnax) allied to the sandpipers. The males during the breeding season have a large ruff of erectile feathers, variable in their colors, on the neck, and yellowish naked tubercles on the face. They are polygamous, and are noted for their pugnacity in the breeding season. The female is called reeve, or rheeve.
- Variable - a. - Having the capacity of varying or changing; capable of alternation in any manner; changeable; as, variable winds or seasons; a variable quantity.
- Cam - n. - A turning or sliding piece which, by the shape of its periphery or face, or a groove in its surface, imparts variable or intermittent motion to, or receives such motion from, a rod, lever, or block brought into sliding or rolling contact with it.
- Variably - adv. - In a variable manner.
- Differential - n. - An increment, usually an indefinitely small one, which is given to a variable quantity.
- Limit - v. t. - A determinate quantity, to which a variable one continually approaches, and may differ from it by less than any given difference, but to which, under the law of variation, the variable can never become exactly equivalent.
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