/ Dictionary / Index I Ido: Meaning and Definition of Find definitions for: I•do Pronunciation: (ē'dō), [key] — n. a revised and simplified form of Esperanto, introduced in 1907. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ido (Thesaurus) Idlewild idocrase Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language