1. Plural of antineutrino; subatomic particles that are the antimatter counterparts of neutrinos, produced in certain radioactive decays and having nearly zero mass and no electric charge.
Usage: physics; technical

Examples

• Antineutrinos are released during beta decay of radioactive nuclei.
• Scientists detect antineutrinos from nuclear reactors to monitor their operation.
• The interaction between antineutrinos and matter is extremely weak.
• Antineutrinos travel at nearly the speed of light through the universe.
• Studying antineutrinos helps physicists understand fundamental particle interactions.