/ Dictionary / Index M modulator: Meaning and Definition of Find definitions for: mod•u•la•tor Pronunciation: (moj'u-lā"tur), [key] — n. a person or thing that modulates. a device for modulating a carrier wave. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. modulation module Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language