ventilation system

Noun
  1. A mechanical system in a building that provides fresh air (synset 104533815)
    "she was continually adjusting the ventilation"
    hypernym: mechanical system - a system of elements that interact on mechanical principles
    part holonym:
    • ventilation shaft - a shaft in a building; serves as an air passage for ventilation
    • ventilator - a device (such as a fan) that introduces fresh air or expels foul air
    synonym: ventilating system, ventilation

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