Source : WordNet®

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