intermediate vector boson

noun, 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 0 particle.
Also called vector boson.
Origin
1965-70
British Dictionary definitions for intermediate vector boson

intermediate vector boson

noun
1.
(physics) a hypothetical particle believed to mediate the weak interaction between elementary particles
intermediate vector boson in Science
intermediate vector boson  
Either of two subatomic particles, the W boson or the Z boson, that mediate the weak nuclear force.