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Definition of high pressure noun from the Oxford Advanced Learner's Dictionary

high pressure

noun
 
/ˌhaɪ ˈpreʃə(r)/
 
/ˌhaɪ ˈpreʃər/
[uncountable]
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  1. the condition of air, gas, or liquid that is kept in a small space by force
    • at high pressure Water is forced through the pipes at high pressure.
  2. a condition of the air that affects the weather, when the pressure is higher than average
    • The rain will be followed by warmer, drier weather as areas of high pressure move in.
    compare low pressure
See high pressure in the Oxford Advanced American DictionarySee high pressure in the Oxford Learner's Dictionary of Academic English

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