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pressurize (v.)

"produce or maintain pressure artificially" in an aircraft, etc., 1938 (implied in pressurized), from pressure (n.) + -ize. Related: Pressurizing.

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Definitions of pressurize

pressurize (v.)
increase the pressure on a gas or liquid;
Synonyms: supercharge / pressurise
pressurize (v.)
maintain a certain pressure;
the airplane cabin is pressurized
pressurize a space suit
Synonyms: pressurise
pressurize (v.)
increase the pressure in or of;
The captain will pressurize the cabin for the passengers' comfort
Synonyms: pressurise
From wordnet.princeton.edu