pres·​sur·​ize | \ ˈpre-shə-ˌrīz How to pronounce pressurize (audio) \
pressurized; pressurizing

Definition of pressurize

transitive verb

1 : to confine the contents of under a pressure greater than that of the outside atmosphere especially : to maintain near-normal atmospheric pressure in during high-altitude or spaceflight (as by means of a supercharger)
2 : to apply pressure to
3 : to design to withstand pressure

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Other Words from pressurize

pressurization \ ˌpre-​sh(ə-​)rə-​ˈzā-​shən How to pronounce pressurization (audio) \ noun
pressurizer noun

Examples of pressurize in a Sentence

A pump is used to pressurize the fuel. The system that pressurizes the airplane's cabin failed to operate correctly. Don't let them pressurize you to do anything you don't want to do.
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Recent Examples on the Web

There also is a clever new rear-seat airbag, mounted in each front seatback (sorry, middle rear passenger) that's only partially pressurized. Alexander Stoklosa, Car and Driver, "The Mercedes-Benz ESF Is a One-Car Showcase of the Way Safety Will Look in Vehicles of the Future," 20 May 2019 The surviving dishes will go through one more test in Singapore, where the airline has a cabin mock-up on the ground that can be pressurized to better replicate the in-air experience. Scott Mccartney, WSJ, "The Science Behind the World’s Longest Flights," 15 Aug. 2018 According to India’s Deputy Prime Minister Lalit Gupta, the cabin crew forgot to flip a switch to pressurize the cabin after takeoff. Avery Thompson, Popular Mechanics, "Passengers Injured After Flight Crew Forgets to Pressurize Cabin," 21 Sep. 2018 Above all, SpaceX still needs to add some upgraded helium tanks to the vehicle, which are needed to pressurize the rocket during flight. Loren Grush, The Verge, "Starting this weekend, SpaceX is about to land a whole lot more rockets," 21 July 2018 In response to a journalist question about Mars, Musk said his boring equipment could certainly be used to create pressurized, underground housing for humans on the planet. Megan Geuss, Ars Technica, "Ars takes a first tour of the length of The Boring Company’s test tunnel," 19 Dec. 2018 That sensor registered low pressure, leading Columbia Gas to release a large amount of gas into the new plastic pipe to ensure it was fully pressurized. Jennifer Levitz, WSJ, "Overpressurized Pipes Faulted in Massachusetts Blasts," 11 Oct. 2018 All airplane cabins are pressurized to simulate the amount of pressure felt at 8,000 feet. Aditi Shrikant, Vox, "This is what happens to your body when an airplane cabin isn’t pressurized," 21 Sep. 2018 So what happens to your body when an airplane cabin is not pressurized? Aditi Shrikant, Vox, "This is what happens to your body when an airplane cabin isn’t pressurized," 21 Sep. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pressurize.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of pressurize

1938, in the meaning defined at sense 1

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Statistics for pressurize

Last Updated

31 May 2019

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Time Traveler for pressurize

The first known use of pressurize was in 1938

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English Language Learners Definition of pressurize

: to press (something) tightly into a space or container
: to cause the air pressure inside (something, such as an airplane) to be the same as or close to the pressure of air on the Earth's surface

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More from Merriam-Webster on pressurize

Rhyming Dictionary: Words that rhyme with pressurize

Spanish Central: Translation of pressurize

Nglish: Translation of pressurize for Spanish Speakers

Britannica English: Translation of pressurize for Arabic Speakers

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