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[presh-uh-rahyzd] /ˈprɛʃ əˌraɪzd/
brought to and maintained at an atmospheric pressure higher than that of the surroundings:
cooking with pressurized steam.
maintained at an air pressure comfortable for breathing:
a pressurized cabin and cockpit; a pressurized suit for diving.
Informal. subject or subjected to undue pressure or harassment:
the pressurized milieu of big business.
Origin of pressurized
1935-40; pressurize + -ed2
Related forms
unpressurized, adjective


[presh-uh-rahyz] /ˈprɛʃ əˌraɪz/
verb (used with object), pressurized, pressurizing.
to raise the internal atmospheric pressure of to the required or desired level:
to pressurize an astronaut's spacesuit before a walk in space.
to maintain normal air pressure in (the cockpit or cabin of an airplane) at high altitudes.
to apply pressure to (a gas or liquid); supercharge.
to pressure-cook.
Also, especially British, pressurise.
1940-45; pressure + -ize
Related forms
pressurizer, noun
repressurize, verb, repressurized, repressurizing. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for pressurized
  • pressurized evolution accounts for the strange crustaceans and tubeworms found near thermal vents on the ocean floor.
  • It made me feel incredibly uncomfortable and pressurized.
  • Boiling reactors are cheap but unsafe, pressurized water is better.
  • The cabin obviously needs to be pressurized, so there is no savings there.
  • Such cells exist to work under pressurized conditions to over several thousands of psi.
  • The new rover is pressurized so that astronauts can safely explore much more of the moon's surface.
  • When existing space suits are pressurized, they tend to stiffen.
  • These specialized vacuums use heated and pressurized vapor to sterilize and reach deeply into carpet fibers.
  • After about an hour and a half, he was fine in the pressurized system.
  • Steam cleaners sterilize and clean deep into carpet fibers using heated and pressurized vapor.
British Dictionary definitions for pressurized


verb (transitive)
to increase the pressure in (an enclosure, such as an aircraft cabin) in order to maintain approximately atmospheric pressure when the external pressure is low
to increase pressure on (a fluid)
to make insistent demands of (someone); coerce
Derived Forms
pressurization, pressurisation, noun
pressurizer, pressuriser, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for pressurized



1938 (implied in pressurized), from pressure (n.) + -ize. Related: Pressurizing.

Online Etymology Dictionary, © 2010 Douglas Harper
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