| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024lep•ton1 (lep′ton),USA pronunciation n., pl. -ta (-tə).USA pronunciation - Currencyan aluminum coin of modern Greece, the 100th part of a drachma.
- Currencya small copper or bronze coin of ancient Greece.
- Greek leptón (nómisma) a small (coin), noun, nominal use of neuter of leptós small; see lepto-
- 1715–25
- Physicsany of a class of particles with spin of ½ 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 and electron-neutrino, the muon and mu-neutrino, and the tau lepton and tau-neutrino. Cf. conservation of lepton number.
- Greek, neuter of leptós small, slight; see lepto-, -on1
- 1948
Collins Concise English Dictionary © HarperCollins Publishers:: lepton /ˈlɛptɒn/ n ( pl -ta / -tə/)- a former Greek monetary unit worth one hundredth of a drachma
- a small coin of ancient Greece
Etymology: from Greek lepton (nomisma) small (coin) lepton /ˈlɛptɒn/ n - any of a group of elementary particles and their antiparticles, such as an electron, muon, or neutrino, that participate in electromagnetic and weak interactions and have a half-integral spin
Etymology: 20th Century: from lepto- + -on |