/ Dictionary / Index E extended coverage: Meaning and Definition of Find definitions for: extend'ed cov'erage Pronunciation: [key] — Insurance. Insurance. an extension of a casualty-insurance policy to provide insurance against risks not covered under the basic policy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. extended complex plane extended family Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language