from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A garment that is worn in high-altitude aircraft or in spacecraft to compensate for low-pressure conditions.

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

  • noun protective garment consisting of an inflatable suit for space or high altitude flying


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  • A pressurized suit worn by high-altitude pilots who may fly so high that even breathing pure oxygen at surrounding pressure would not provide enough oxygen for them to function. One type of pressure suit is a spacesuit, which is designed to operate in complete vacuum. (Wikipedia)

    May 29, 2008