Greek monetary unit - monetary unit in Greece

Greek drachma, drachma - formerly the basic unit of money in Greece

electron, negatron - an elementary particle with negative charge

elementary particle, fundamental particle, subatomic particle - a particle that is less complex than an atom; regarded as constituents of all matter

fermion - any particle that obeys Fermi-Dirac statistics and is subject to the Pauli exclusion principle

mu-meson, muon, negative muon - an elementary particle with a negative charge and a half-life of 2 microsecond; decays to electron and neutrino and antineutrino

neutrino - an elementary particle with zero charge and zero mass

tau-minus particle, tauon - a lepton of very great mass