pressurize: Meaning and Definition of

pres•sur•ize

1. to raise the internal atmospheric pressure of to the required or desired level: to pressurize an astronaut's spacesuit before a walk in space.
2. to maintain normal air pressure in (the cockpit or cabin of an airplane) at high altitudes.
3. to apply pressure to (a gas or liquid); supercharge.
4. to pressure-cook.