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2 definitions found
 for pressurize
From The Collaborative International Dictionary of English v.0.48 :

  pressurize \pressurize\ v. t.
     To increase the pressure on (a gas or liquid); as,
     pressurized oxygen.
  
     Syn: supercharge, apply pressure to.
          [WordNet 1.5]
  
     2. To increase and maintain a pressure in (a compartment or
        container), above that of the ambient pressure; -- of
        airplanes, space suits, and diving bells, for example; as,
        the airplane cabin was pressurized for the comfort of the
        passengers; the sterile room was pressurized to prevent
        contamination.
        [WordNet 1.5 + PJC]
  
     negatively pressurized maintained at a pressure somewhat
        below that of ambient pressure; -- a technique sometimes
        used to keep airborn materials in a room from escaping
        out; as, the biohazard lab was negatively pressurized to
        keep hazardous biological agents from escaping into the
        environment.
        [PJC]

From WordNet (r) 3.0 (2006) :

  pressurize
      v 1: increase the pressure on a gas or liquid [syn:
           supercharge, pressurize, pressurise]
      2: maintain a certain pressure; "the airplane cabin is
         pressurized"; "pressurize a space suit" [syn: pressurize,
         pressurise]
      3: increase the pressure in or of; "The captain will pressurize
         the cabin for the passengers' comfort" [syn: pressurize,
         pressurise] [ant: decompress, depressurise,
         depressurize]

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