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Neutron can refer to a couple of different concepts, depending on the context: 1. **In Physics**: A neutron is a subatomic particle found in the nucleus of an atom. It has no electric charge (it is neutral) and has a mass slightly greater than that of a proton. Neutrons, along with protons (which are positively charged), make up the atomic nucleus, contributing to the mass of an atom and playing a critical role in nuclear reactions and stability.
