Princeton's WordNet

1. ventilation, airing(noun)

   the act of supplying fresh air and getting rid of foul air

2. ventilation, ventilation system, ventilating system(noun)

   a mechanical system in a building that provides fresh air

   "she was continually adjusting the ventilation"

3. public discussion, ventilation(noun)

   free and open discussion of (or debate on) some question of public interest

   "such a proposal deserves thorough public discussion"

4. breathing, external respiration, respiration, ventilation(noun)

   the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation

Wiktionary

1. ventilation(Noun)

   The replacement of stale or noxious air with fresh.

2. ventilation(Noun)

   The mechanical system used to circulate and replace air..

3. ventilation(Noun)

   An exchange of views during a discussion.

4. ventilation(Noun)

   The bodily process of breathing; the inhalation of air to provide oxygen, and the exhalation of spent air to remove carbon dioxide.

Webster Dictionary

1. Ventilation(noun)

   the act of ventilating, or the state of being ventilated; the art or process of replacing foul air by that which is pure, in any inclosed place, as a house, a church, a mine, etc.; free exposure to air

2. Ventilation(noun)

   the act of refrigerating, or cooling; refrigeration; as, ventilation of the blood

3. Ventilation(noun)

   the act of fanning, or winnowing, for the purpose of separating chaff and dust from the grain

4. Ventilation(noun)

   the act of sifting, and bringing out to view or examination; free discussion; public exposure

5. Ventilation(noun)

   the act of giving vent or expression

U.S. National Library of Medicine

1. Ventilation

   Supplying a building or house, their rooms and corridors, with fresh air. The controlling of the environment thus may be in public or domestic sites and in medical or non-medical locales. (From Dorland, 28th ed)

• ventilasieAfrikaans
• تَهْوئَهArabic
• проветряванеBulgarian
• ventilaçãoPortuguese (BR)
• větráníCzech
• die LüftungGerman
• udluftning; ventilationDanish
• εξαερισμόςGreek
• ventilaciónSpanish
• ventilatsioonEstonian
• تهویهFarsi
• ilmanvaihtoFinnish
• ventilationFrench
• אִוורוּרHebrew
• हवा देनाHindi
• prozračivanje, ventilacijaCroatian
• szellőz(tet)ésHungarian
• ventilasiIndonesian
• loftræstingIcelandic
• ventilazioneItalian
• 換気Japanese
• 환기Korean
• vėdinimas, ventiliacijaLithuanian
• ventilācija; vēdināšanaLatvian
• pengalihan udaraMalay
• verluchtingDutch
• ventilasjon, utluftingNorwegian
• wentylacjaPolish
• ventilaçãoPortuguese
• ventilaţieRomanian
• вентиляцияRussian
• vetranieSlovak
• zračenjeSlovenian
• ventilacijaSerbian
• ventilationSwedish
• การระบายลมThai
• havalandırmaTurkish
• 通風Chinese (Trad.)
• провітрювання, вентиляціяUkrainian
• ہوا کے آنے جانے کا انتظامUrdu
• sự thông gió, hơiVietnamese
• 通风Chinese (Simp.)