verb (used with object), pres·sur·ized, pres·sur·iz·ing.
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.
Also especially British, pres·sur·ise.
Origin of pressurize
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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
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
Online Etymology Dictionary, © 2010 Douglas Harper