aluminum coin of modern Greece, the 100th part of a drachma
small copper or bronze coin of ancient Greece
any of a class of particles with spin of 1/2 that are not subject to the strong force and that are believed to be truly elementary and not composed of quarks or other subunits. The leptons known or believed to exist are the electron
a former monetary unit of Greece [n LEPTA] / a subatomic particle [n LEPTA, LEPTONS] : LEPTONIC [adj]