/ Dictionary / Index S side-on: Meaning and Definition of Find definitions for: side-on Pronunciation: (sīd'on', -ôn'), [key] — adj. (of two objects) meeting with the sides foremost. —adv. with the side or sides foremost, esp. in a collision: The other car struck me side-on. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. side money sidepiece Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language