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Act of causing a quantity to disappear from an equation; especially, in the operation of deducing from several equations containing several unknown quantities a less number of equations containing a less number of unknown quantities.

Exhibiting energy; operating with force, vigor, and effect; forcible; powerful; efficacious; as, energetic measures; energetic laws.

In a state of action; acting; operating.

To use strength in action; to act or operate with force or vigor; to act in producing an effect. Of all men it is true that they feel and energize first, they reflect and judge afterwards. J. C. Shairp.

Internal or inherent power; capacity of acting, operating, or producing an effect, whether exerted or not; as, men possessing energies may suffer them to lie inactive. The great energies of nature are known to us only by their effects. Paley.

s, the construction of lighthouses, etc., and, in time of war, supervises the engineering operations of the armies in the field.

The act or operation of clearing of knots, or of untying; hence, also, the solution of a difficulty. [R.] Bailey.

The operation of sewing up a rent in the intestinal canal.

The act or operation of eroding or eating away.

The operation of making an incision into the esophagus, for the purpose of removing any foreign substance that obstructs the passage. [Written also oesophagotomy.]

he base; an ester. -- Ether engine (Mach.), a condensing engine like a steam engine, but operated by the vapor of ether instead of by steam.

The operation of blanching plants, by excluding the light of the sun; the condition of a blanched plant.

The consequence of anything; the issue; conclusion; result; that in which an action, operation, or series of operations, terminates. Dark doubts between the promise and event. Young.

In old writers, the operations concerned in the removal of parts of the body.

In inland duty or impost operating as an indirect tax on the consumer, levied upon certain specified articles, as, tobacco, ale, spirits, etc., grown or manufactured in the country. It is also levied to pursue certain trades and deal in certain commodities. Certain direct taxes (as, in England, those on carriages, serv…

Free, or released, from some liability to which others are subject; excepted from the operation or burden of some law; released; free; clear; privileged; -- (with from): not subject to; not liable to; as, goods exempt from execution; a person exempt from jury service. True nobility is exempt from fear. Shak. T is laid…

thing of the nature of an active faculty; to put in vigorous action; to bring into active operation; as, to exert the strength of the body, limbs, faculties, or imagination; to exert the mind or the voice.

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

Expeditious; quick; speedily; prompt. Nimble and expedite . . . in its operation. Tollotson. Speech is a very short and expedite way of conveying their thoughts. Locke.

e labor, and thought; to expend hay in feeding cattle, oil in a lamp, water in mechanical operations. If my death might make this island happy . . . I would expend it with all willingness. Shak.