— deaeration , n. — deaerator /dee air"ay teuhr, -ay"euh ray'-/ , n.
/dee air"ayt, -ay"euh rayt'/ , v.t., deaerated, deaerating .
1. to remove air or gas from.
2. to remove bubbles from (a liquid, as boiler feedwater), as by mechanical agitation in a vacuum or by heating at atmospheric pressure.
Also, de-aerate .
[ 1785-95; DE- + AERATE ]