lepton

  1. Noun.  A small, bronze Judean coin from the 1st century BC. The lowest value coin ever in circulation. Considered by some to be the widow's mite.
  2. Noun.  An elementary particle with a spin of 1/2 (a fermion) which is immune to the strong nuclear force (including the electron, the muon, the neutrino and the tauon).

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.