'pressurize' definitions:

Definition of 'pressurize'

From: WordNet
verb
Increase the pressure on a gas or liquid [syn: supercharge, pressurize, pressurise]
verb
Maintain a certain pressure; "the airplane cabin is pressurized"; "pressurize a space suit" [syn: pressurize, pressurise]
verb
Increase the pressure in or of; "The captain will pressurize the cabin for the passengers' comfort" [syn: pressurize, pressurise] [ant: decompress, depressurise, depressurize]

Definition of 'pressurize'

From: GCIDE
  • pressurize \pressurize\ v. t. To increase the pressure on (a gas or liquid); as, pressurized oxygen.
  • Syn: supercharge, apply pressure to. [WordNet 1.5]
  • 2. To increase and maintain a pressure in (a compartment or container), above that of the ambient pressure; -- of airplanes, space suits, and diving bells, for example; as, the airplane cabin was pressurized for the comfort of the passengers; the sterile room was pressurized to prevent contamination. [WordNet 1.5 + PJC]
  • negatively pressurized maintained at a pressure somewhat below that of ambient pressure; -- a technique sometimes used to keep airborn materials in a room from escaping out; as, the biohazard lab was negatively pressurized to keep hazardous biological agents from escaping into the environment. [PJC]