Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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air pressure the force of air on things. Air pressure has to do with how much force air has when it has been compressed into a space like a tire. It is also the pressure of the earth's atmosphere.
barometric pressure the pressure of the earth's atmosphere, as measured by a barometer; atmospheric pressure.
blood pressure the pressure of the blood against the inner wall of blood vessels, esp. the arteries or the heart, as exerted by the contractions of the heart muscles, often measured as an indicator of physical health.
high-pressure of, concerning, or characterized by a pressure much higher than normal atmospheric pressure. [4 definitions]
low-pressure having, exerting, or indicating less than normal pressure, as steam or water. [3 definitions]
osmotic pressure the pressure created by a solvent in passing through a semipermeable membrane. (See osmosis.)
pressure cooker a heavy, airtight metal pot in which steam under pressure cooks food quickly and at a very high temperature. [2 definitions]
pressure gauge a device that measures the pressure of an enclosed gas or fluid. [2 definitions]
pressure group any special-interest group that tries to influence government officials and legislation through publicity, lobbying, or the like.
pressure point any of several places on the body where an artery passes over bone close to the skin, and where pressure can be applied to cut off blood flow to a limb, as in the case of serious injury.
pressure suit an airtight suit that, when inflated, maintains for its wearer normal atmospheric pressure at high altitudes, in space, or the like.
vapor pressure the pressure of vapor, esp. in contact with its liquid form; vapor tension.