There are 2 definitions of lepton in English:

lepton1

Syllabification: lep·ton
Pronunciation: /ˈleptän
 
/

noun (plural lepta /-tə/)

A monetary unit of Greece until the introduction of the euro, worth one hundredth of a drachma (used only in calculations).

Origin

from Greek lepton, neuter of leptos 'small'.

Definition of lepton in:

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Word of the day anomalous
Pronunciation: əˈnɒm(ə)ləs
adjective
deviating from what is standard, normal, or expected

There are 2 definitions of lepton in English:

lepton2

Syllabification: lep·ton
Pronunciation: /ˈleptän
 
/

noun

Physics
A subatomic particle, such as an electron, muon, or neutrino, that does not take part in the strong interaction.
More example sentences
  • Like quarks and leptons, the Higgs particle also derives its mass from coupling to the Higgs condensate.
  • There are small subatomic particles called leptons.
  • Finally, the EM force acts on electrically charged particles: charged leptons (like electrons), and charged force carriers.

Origin

1940s: from Greek leptos 'small' + -on.

Derivatives

leptonic

Pronunciation: /lepˈtänik/
adjective
More example sentences
  • No observation of leptonic decays of D-mesons has yet been reported, owing to the smaller branching fraction.
  • This colour quantum number is additional to leptonic flavour which distinguishes neutrinos from charged leptons.

Definition of lepton in:

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Word of the day anomalous
Pronunciation: əˈnɒm(ə)ləs
adjective
deviating from what is standard, normal, or expected