Definition: The word 'antineutrino' refers to a neutrino, which is an electron-like particle that does not have mass or charge. It can exist in two different states: neutrinos (which are light particles with no mass) and antineutrinos (electrons that are heavy and have opposite charges). Antineutrinos play a critical role in nuclear physics because they are responsible for the emission of gamma rays when they interact with matter, which is an important process in nuclear fusion.
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