Ventilation

How to spell ventilation

11 letters · 4 syllables

How to pronounce ventilation

Say the part in capitals loudest.

What does ventilation mean?

1. nounThe provision of fresh air to a room, building, or space, or the system that achieves it.
2. nounThe movement of air into and out of the lungs, often assisted by a machine.

Ventilation in a sentence

• The basement office had poor ventilation, so the air always felt stale.

• The patient required mechanical ventilation after the surgery.

• Engineers improved the tunnel's ventilation to clear exhaust fumes faster.

• Nurses monitored his ventilation closely throughout the night.

Where does ventilation come from?

Language of origin: Latin

This word traces back to the Latin verb ventilare, which literally meant 'to fan' or 'to expose to the air', and that verb was built directly on ventus, the ordinary Latin word for 'wind'. The earliest agricultural sense involved winnowing grain by tossing it into a breeze so that the chaff blew away, a vivid image of using moving air to do useful work. When the word entered English in the 1400s it carried that idea of stirring or fanning the air, and by the 1600s it had settled into its modern meaning of supplying a room or building with fresh air. The same ventus root sits inside the everyday word 'vent', and recognising that shared core helps explain the spelling, since the word really is 'vent' plus the longer Latin tail '-ilation'. The unstressed middle syllable '-ti-la-' is the usual trap, because the vowel there is a faint schwa that gives no clue to which letters belong.

How the word is built

• vent- (from Latin ventus: wind)
• -il- (verb-forming element)
• -ation (noun of action)