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Verb: depressurise  dee'pre-shu,rIz
Usage: Brit (N. Amer: depressurize)
  1. Decrease the pressure of
    "depressurise the cabin in the air plane";
    - depressurize, decompress

Derived forms: depressurised, depressurises, depressurising

Type of: adjust, correct, set

Antonym: pressurise [Brit]