'tau-minus particle' definitions:

Definition of 'tau-minus particle'

From: WordNet
noun
A lepton of very great mass [syn: tauon, tau-minus particle]

Definition of 'tau-minus particle'

From: GCIDE
  • lepton \lepton\ n. (Physics) an elementary particle that participates in weak interactions but does not participate in the strong interaction; it has a baryon number of 0. Some known leptons are the electron, the negative muon, the tau-minus particle, and the neutrinos associated with each of these particles. [WordNet 1.5 +PJC]