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electron e·lec·tron (ĭ-lěk'trŏn')
A stable subatomic particle in the lepton family having a rest mass of 9.1066 × 10-28 gram and a unit negative electric charge of approximately 1.602 × 10-19 coulomb. Also called negatron.
negatron neg·a·tron (něg'ə-trŏn')
An electron with a negative charge, as contrasted with a positron.
An electron with a negative charge; the antiparticle of the positron. Most branches of particle physics construe each particle along with its antiparticle to be two different forms of one underlying phenomenon, and the term electron is sometimes used as a precisely such a general term, with positron and negatron referring to the forms of the electron as they are manifested in nature. See more at electron.
An elementary particle with a negative charge and a very small mass. Electrons are normally found in orbits around the nucleus of an atom. The chemical reactions that an atom undergoes depend primarily on the electrons in the outermost orbits (the valence electrons).
Note: The movement of large numbers of electrons through conductors constitutes an electric current.