/ Dictionary / Index S synchronous motor: Meaning and Definition of Find definitions for: syn'chronous mo'tor Pronunciation: [key] — Elect. Elect. a synchronous machine that acts as a motor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Synchronous Meteorological Satellite synchronous rotation Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language