UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈprɛʃəraɪz/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/ˈprɛʃəˌraɪz/ ,USA pronunciation: respelling(preshə rīz′)

Inflections of 'pressurize' (v): (⇒ conjugate)
v 3rd person singular (US & UK)
v pres pverb, present participle: -ing verb used descriptively or to form progressive verb--for example, "a singing bird," "It is singing." (US & UK)
v pastverb, past simple: Past tense--for example, "He saw the man." "She laughed." (US & UK)
v past pverb, past participle: Verb form used descriptively or to form verbs--for example, "the locked door," "The door has been locked." (US & UK)

WordReference Random House Learner's Dictionary of American English © 2020
pres•sur•ize /ˈprɛʃəˌraɪz/USA pronunciation   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/USA pronunciation  n. [uncountable]
pres•sur•iz•er, n. [countable]

WordReference Random House Unabridged Dictionary of American English © 2020
pres•sur•ize  (preshə rīz′),USA pronunciation 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. Physicsto apply pressure to (a gas or liquid);
  4. to pressure-cook.
Also,[esp. Brit.,] pressur•ise′.  pressur•iz′er, n. 
  • pressure + -ize 1940–45

Collins Concise English Dictionary © HarperCollins Publishers::
pressurize, pressurise /ˈprɛʃəˌraɪz/ vb (transitive)
  1. to increase the pressure in (an enclosure, such as an aircraft cabin) in order to maintain approximately atmospheric pressure when the external pressure is low
  2. to increase pressure on (a fluid)
  3. to make insistent demands of (someone); coerce

ˌpressuriˈzation, ˌpressuriˈsation n
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