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

  • adj. Below normal pressure.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Of, relating to, or utilizing less than normal pressure (as in air pressure).


from Wiktionary, Creative Commons Attribution/Share-Alike License

hypo- +‎ baric


  • Roach placed his volunteers in a large metal box called a hypobaric chamber and gradually sucked out air with a vacuum pump, reducing atmospheric pressure to mimic a high altitude, low-oxygen environment.

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  • The main impact of air travel is breathing in air with a reduced oxygen content - resulting in lower circulating oxygen levels in the blood-in a pressurised environment, referred to as hypobaric hypoxia, says the guidance. - latest science and technology news stories

  • The story I nearly wrote was about an assault on Everest in 2053, using teleoperated robots instead of human beings - the idea was that the people driving the robots would be in hypobaric chambers, to simulate the pressure drop.

    EXCLUSIVE INTERVIEW: Alastair Reynolds

  • I ask if there are truly a hundred other athletes with hypobaric tents.

    Chuck Klosterman on Sports

  • • Installed a hypobaric tent in his Virginia home to simulate high-altitude oxygen levels.

    Chuck Klosterman on Sports

  • He wants to go home, perhaps to lie quietly in a hypobaric chamber and dwell upon revenge fantasies.

    Chuck Klosterman on Sports

  • There are probably a hundred other athletes who have hypobaric tents.

    Chuck Klosterman on Sports

  • The number of clandestine hypobaric chambers in the NHL remains unclear.

    Chuck Klosterman on Sports

  • This perfect storm might include a hot wind of American discontent with the occupation of Iraq, the hypobaric levels of popularity of the fifth season of the Bush-Cheney "Who Wants to be a Global Policeman" reality show, and the earthquake that is Iraq in extremis.

    Karen Kwiatkowski: Big, Bad, Perfect Storms

  • But those cyclists who have to actually expend considerable effort and expense to achieve a similar hematocrit level whether it's EPO, CERA, altitude training, hypobaric chamber should be punished!

    Digging Deep: Turning a Positive Into a Positive


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