/ Dictionary / Index E extradosed: Meaning and Definition of Find definitions for: ex•tra•dosed Pronunciation: (ek-strā'dost), [key] — adj. (of an arch) having a curved intrados, the form of which is repeated by the extrados. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. extrados extraembryonic Related Content Daily Word Quiz: crockery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language