/ Dictionary / Index A aerate: Meaning and Definition of Find definitions for: aer•ate Pronunciation: (âr'āt, ā'u-rāt"), [key] — -at•ed, -at•ing. to expose to the action or effect of air or to cause air to circulate through: to aerate milk in order to remove odors. to change or treat with air or a gas, esp. with carbon dioxide. to expose (a medium or tissue) to air, as in the oxygenation of the blood in respiration. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aerate (Thesaurus) aerarium aerator Related Content Daily Word Quiz: alacrity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language