/ Dictionary / Index M modulation: Meaning and Definition of Find definitions for: mod•u•la•tion Pronunciation: (moj"u-lā'shun, mod"yu-), [key] — n. the act of modulating. the state of being modulated. transition from one key to another. the use of a particular distribution of stress or pitch in a construction, as the use of rising pitch on here in John is here? the feature of a construction resulting from such use. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: modulation (Thesaurus) modulate modulator Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language