/ Dictionary / Index S strange particle: Meaning and Definition of Find definitions for: strange' par'ticle Pronunciation: [key] — Physics. Physics. any elementary particle with a strangeness quantum number other than zero. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. strangeness strange quark Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language