from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To reduce the pressure of air or gas within (a chamber or vehicle, for example).

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To reduce the air pressure within a chamber.
  • v. To have the pressure of one's environmental atmosphere reduced.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. decrease the pressure of


de- +‎ pressurize (Wiktionary)



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