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