/ Dictionary / Index I information theory: Meaning and Definition of Find definitions for: informa'tion the"ory Pronunciation: [key] the mathematical theory concerned with the content, transmission, storage, and retrieval of information, usually in the form of messages or data, and esp. by means of computers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. information superhighway informative Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language