/ Dictionary / Index D deaerate: Meaning and Definition of Find definitions for: de•aer•ate Pronunciation: (dē-âr'āt, -ā'u-rāt"), [key] — -at•ed, -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. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: deaerate (Thesaurus) deadwork deaf Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language