/ Dictionary / Index O outage: Meaning and Definition of Find definitions for: out•age Pronunciation: (ou'tij), [key] — n. an interruption or failure in the supply of power, esp. electricity. the period during which power is lost: a two-hour outage on the East Coast. a stoppage in the functioning of a machine or mechanism due to a failure in the supply of power or electricity. the quantity of goods lost or lacking from a shipment. Cf.(def. 1). the amount of fuel used during a flight. Cf.(def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: outage (Thesaurus) outact out-and-out Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language