Definition of lepton
(Entry 1 of 2)
: a former monetary unit equal to ¹/₁₀₀ drachma
lepton
noun (2)Definition of lepton (Entry 2 of 2)
: any of a family of particles (such as electrons, muons, and neutrinos) that have spin quantum number ¹/₂ and that experience no strong forces
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Merriam-Webster unabridged
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Time Traveler for lepton
The first known use of lepton was circa 1741
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