Definify.com
Webster 1913 Edition
High-pressure
High′-presˊsure
(?; 135)
, Adj.
1.
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.
2.
Fig.: Urgent; intense;
as, a
. high-pressure
business or social lifeHigh-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
.