![deaeration deaeration](https://www.tekportal.net/wp-content/uploads/2019/01/deaeration-1277.jpg)
verb (used with object), de·aer·at·ed, de·aer·at·ing.
- to remove air or gas from.
- to remove bubbles from (a liquid, as boiler feedwater), as by mechanical agitation in a vacuum or by heating at atmospheric pressure.
verb (used with object), de·aer·at·ed, de·aer·at·ing.