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Electron
Pronunciation
Definition 1
A small particle with a negative charge that is found in all atoms. Streams of electrons made by special equipment can be used for radiation treatment. (NCI Dictionary)
Definition 2
A fundamental particle with a negative charge. (NCI Thesaurus)
Definition 3
Stable elementary particles having the smallest known negative charge, present in all elements; also called negatrons. Positively charged electrons are called positrons. The numbers, energies and arrangement of electrons around atomic nuclei determine the chemical identities of elements. Beams of electrons are called CATHODE RAYS or BETA RAYS, the latter being a high-energy byproduct of nuclear decay. (NLM, Medical Subject Headings)
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