/ Dictionary / Index S speedometer: Meaning and Definition of Find definitions for: speed•om•e•ter Pronunciation: (spē-dom'i-tur, spi-), [key] — n. an instrument on an automobile or other vehicle for indicating the rate of travel in miles or kilometers per hour. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: speedometer (Thesaurus) speedo speed-read Related Content Daily Word Quiz: laudable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language