#1 pressurise v. [supercharge, pressurize] increase the pressure on a gas or liquid. wn
#2 pressurise v. [pressurize] maintain a certain pressure; "the airplane cabin is pressurized"; "pressurize a space suit". wn
#3 pressurise v. [pressurize] increase the pressure in or of; "The captain will pressurize the cabin for the passengers' comfort". wn
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