| 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
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