pressurization

US: /ˌprɛʃərɪˈzeɪʃən/ ,(presh′ər ə zā′shən)

WordReference Random House Unabridged Dictionary of American English © 2026

pres•sur•i•za•tion  (presh′ər ə zā′shən), n. 

1. the process or act of pressurizing.
2. the state of being pressurized.

• pressurize + -ation 1935–40

WordReference Random House Learner's Dictionary of American English © 2026

pres•sur•ize /ˈprɛʃəˌraɪz/   v. [~ + object] , -ized, -iz•ing. 

1. to produce or maintain normal air pressure in (an airplane cabin, etc.), esp. at high altitudes or in space:
   The cabin was pressurized once the plane leveled off at a lower altitude.

pres•sur•i•za•tion /ˌprɛʃərɪˈzeɪʃən/  n. [uncountable]
pres•sur•iz•er, n. [countable]

WordReference Random House Unabridged Dictionary of American English © 2026

pres•sur•ize  (presh′ə rīz′), v.t., -ized, -iz•ing. 

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. Physics to apply pressure to (a gas or liquid);
   supercharge.
4. to pressure-cook.

Also,[esp. Brit.,] pres′sur•ise′. 

• pressure + -ize 1940–45

pres′sur•iz′er, n.