noun (1)
lep·​ton | \ lep-ˈtän How to pronounce lepton (audio) \
plural lepta\ lep-​ˈtä How to pronounce lepton (audio) \

Definition of lepton

 (Entry 1 of 2)

: a former monetary unit equal to ¹/₁₀₀ drachma


noun (2)
lep·​ton | \ ˈlep-ˌtän How to pronounce lepton (audio) \

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

Other Words from lepton

Noun (2)

leptonic \ lep-​ˈtä-​nik How to pronounce lepton (audio) \ adjective

First Known Use of lepton

Noun (1)

circa 1741, in the meaning defined above

Noun (2)

circa 1929, in the meaning defined above

History and Etymology for lepton

Noun (1)

Modern Greek, from Greek, a small coin, from neuter of leptos peeled, slender, small, from lepein to peel — more at leper

Noun (2)

Greek leptos + English -on entry 2

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Time Traveler for lepton

Time Traveler

The first known use of lepton was circa 1741

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Cite this Entry

“Lepton.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lepton. Accessed 6 Mar. 2021.

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