positron(redirected from Beta plus particle)
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A subatomic particle of mass and charge equal to the electron but of opposite (that is, positive) charge.
Synonym(s): positive electron
A subatomic particle of mass and charge equal to the electron but of opposite (i.e., positive) charge.
One of the small particles that make up an atom. A positron has the same mass and amount of charge as an electron, but the positron has a positive charge.
Mentioned in: Positron Emission Tomography (PET)