/ Dictionary / Index A amplitude modulation: Meaning and Definition of Find definitions for: am'plitude modula'tion Pronunciation: [key] — Electronics, Radio. Electronics,Radio. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. amplitude amply Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language