or de-aer·ate

[ dee-air-eyt, -ey-uh-reyt ]
/ diˈɛər eɪt, -ˈeɪ əˌreɪt /

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.

Origin of deaerate

First recorded in 1785–95; de- + aerate

Related forms

de·aer·a·tion, nounde·aer·a·tor [dee-air-ey-ter, -ey-uh-rey-] /diˈɛər eɪ tər, -ˈeɪ əˌreɪ-/, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019