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High"-pres`sure (?; 135), a.


Having or involving a pressure greatly exceeding that of the atmosphere; -- said of steam, air, water, etc., and of steam, air, or hydraulic engines, water wheels, etc.


Fig.: Urgent; intense; as, a high-pressure business or social life.

High-pressure engine, an engine in which steam at high pressure is used. It may be either a condensing or a noncondensing engine. Formerly the term was used only of the latter. See Steam engine.


© Webster 1913.

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