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Meaning of intermediate vector boson

interme'diate vec'tor bos"on

Pronunciation: [key]
— Physics. Physics.
  1. 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.