/ Dictionary / Index I intermediate vector boson: Meaning and Definition of Find definitions for: interme'diate vec'tor bos"on Pronunciation: [key] — Physics. Physics. one of the three particles that are believed to transmit the weak force: the positively charged W particle, the negatively charged W particle, and the neutral Z particle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. intermediate-value theorem intermediation Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language