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The ratio of useful work to energy expended. Rankine. Efficiency of a heat engine, the ratio of the work done an engine, to the work due to the heat supplied to it.

of units of work which the unit of heat can perform; the mechanical energy which must be expended to raise the temperature of a unit weight of water from 0º C. to 1º C., or from 32º F. to 33º F. The term was introduced by Dr. Mayer of Heilbronn. Its value was found by Joule to be 1390 foot pounds upon the Centigrade,…

of work done by a dyne working through a distance of one centimeter; the amount of energy expended in moving a body one centimeter against a force of one dyne. One foot pound is equal to 13,560,000 ergs.

A device for measuring, or an instrument for indicating, energy expended or work done; a dynamometer. -- Er`go*met"ric (#), a.

To lay out, as money; to deal out; to expend. [Obs.]

To drain, metaphorically; to use or expend wholly, or till the supply comes to an end; to deprive wholly of strength; to use up; to weary or tire out; to wear out; as, to exhaust one's strength, patience, or resources. A decrepit, exhausted old man at fifty-five. Motley.

Capable of being exhausted, drained off, or expended. Johnson.

A spending or consuming; disbursement; expenditure. Husband nature's riches from expense. Shak.

Free in expending; very liberal; especially, in a bad scene; extravagant; lavish. [R.] An active, expensive, indefatigable goodness. Sprat. The idle and expensive are dangerous. Sir W. Temple.

rodigal beyond bounds of propriety or duty; want of moderation; excess; especially, undue expenditure of money; vaid and superfluous expense; prodigality; as, extravagance of anger, love, expression, imagination, demands. Some verses of my own, Maximin and Almanzor, cry vengeance on me for their extravagance. Dryden. T…

Profuse in expenditure; prodigal; wasteful; as, an extravagant man. "Extravagant expense." Bancroft.

The science of raising and expending the public revenue. "Versed in the details of finance." Macaulay.

Foolish expenditure; waste. [Obs.] Chaucer.

Economical in the use or appropriation of resources; not wasteful or lavish; wise in the expenditure or application of force, materials, time, etc.; characterized by frugality; sparing; economical; saving; as, a frugal housekeeper; frugal of time. I oft admire How Nature, wise and frugal, could commit Such disproportio…

lity of being frugal; prudent economy; that careful management of anything valuable which expends nothing unnecessarily, and applies what is used to a profitable purpose; thrift; --- opposed to extravagance. Frugality is founded on the principle that all riches have limits. Burke.

Tennyson. The gloomy staircase on which the grating gave. Dickens. -- To give out. (a) To expend all one's strength. Hence: (b) To cease from exertion; to fail; to be exhausted; as, my feet being to give out; the flour has given out. -- To give over, to cease; to discontinue; to desist. It would be well for all author…

Scot may have humor, I'd almost said wit. Goldsmith. A great deal of excellent humor was expended on the perplexities of mine host. W. Irving. Aqueous humor, Crystalline humor or lens, Vitreous humor. (Anat.) See Eye. -- Out of humor, dissatisfied; displeased; in an unpleasant frame of mind.

work in the C. G. S. system of units (ergs), and is practically equivalent to the energy expended in one second by an electric current of one ampere in a resistance of one ohm. One joule is approximately equal to 0.738 foot pounds. Joule's equivalent. See under Equivalent, n.

An integrating wattmeter for measuring the energy in joules expended in an electric circuit or developed by a machine.

A measure of energy or work done, being the amount expended in raising one kilogram through the height of one meter, in the latitude of Paris.