Antilepton
noun ·Rare ·Advanced level
Definitions
- 1 The antiparticle of a lepton. particle
"When a W⁺ boson decays into a positron and a neutrino, lepton number is conserved because the W⁺ boson is a non-lepton, the neutrino is a lepton, and the positron is an antilepton. Likewise, when a W⁻ boson decays into an electron and an antineutrino, lepton number is conserved because the W⁻ boson is a non-lepton, the electron is a lepton, and the antineutrino is an antilepton."
- 2 the antiparticle of a lepton wordnet
Example
More examples"When a W⁺ boson decays into a positron and a neutrino, lepton number is conserved because the W⁺ boson is a non-lepton, the neutrino is a lepton, and the positron is an antilepton. Likewise, when a W⁻ boson decays into an electron and an antineutrino, lepton number is conserved because the W⁻ boson is a non-lepton, the electron is a lepton, and the antineutrino is an antilepton."
Etymology
From anti- + lepton.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.