neutrons
n. plural-only C1 Advanced US //ˈnuˌtɹɑnz// UK //njˈuːtɹɒnz// neu·trons
n. tiny parts inside an atom that have no electrical charge. They live in the center of the atom along with protons.
n. subatomic particles with no net electric charge and a mass slightly greater than that of a proton. Found in the atomic nucleus of all elements except hydrogen-1.
The nucleus of an atom contains protons and neutrons.
Scientists use beams of neutrons to study the structure of materials at the molecular level.
Isotopes of a single element differ only in the number of neutrons present in their nuclei, which affects their atomic mass but not their chemical properties.
Usage
Usually used in the plural when discussing atomic structure or nuclear physics.