/ Dictionary / Index I IADB: Meaning and Definition of Find definitions for: IADB Pronunciation: [key] Inter-American Defense Board. Inter-American Development Bank. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Iacocca IAEA Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language