pressurize

Verb

• increase the pressure in or of
  • The captain will pressurize the cabin for the passengers' comfort
    

• maintain a certain pressure
  • the airplane cabin is pressurized
    
  • pressurize a space suit
    

• increase the pressure on a gas or liquid

Related words

• Synonyms: 
  pressurise , supercharge
• Antonyms: 
  depressurize , depressurise , decompress