Definition of "pressurization" [pressurization]

• The act or process of increasing pressure within a volume of space. (noun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "This particular set of plumbing feeds gaseous hydrogen (tapped off the SSMEs, I believe - not 100 percent sure where the tap-off point is as I write this) back into the External Tank's liquid hydrogen tank during ascent, to maintain pressurization of the tank."
• "If the pilots forget to turn on the cabin pressurization system, it automatically adds enough air so that the crew can safely fly the jet."
• "The interior of the fuselage was subjected to varying hydraulic pressures to simulate the changing effects of cabin pressurization during flight, while at the same time the wings were mechanically flexed to reproduce what is technically known as "gust loading.""