pres·sur·ize [ préshə rz ](past and past participlepres·sur·ized, present participlepres·sur·iz·ing, 3rd person present singularpres·sur·iz·es)
transitive verb
Definition:
1. increase air pressure in enclosed space: to increase the air pressure in an enclosed space, e.g. inside an aircraft, in order to maintain air at close to normal atmospheric pressure when the external air pressure falls
2. increase air pressure in container: to increase the pressure of a gas or liquid in a container beyond normal levels