say it: ven-tuh-LAY-shuhn
ventilation is a noun meaning "the act of supplying fresh air and getting rid of foul air". It carries 4 recorded senses.
the act of supplying fresh air and getting rid of foul air
a mechanical system in a building that provides fresh air
“she was continually adjusting the ventilation”
free and open discussion of (or debate on) some question of public interest
“such a proposal deserves thorough public discussion”
the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for ventilation come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.