Medical Dictionary


noun \ˈī-ən, ˈī-ˌän\

Medical Definition of ION

:  an atom or group of atoms that carries a positive or negative electric charge as a result of having lost or gained one or more electrons—see anion, cation
:  a charged subatomic particle (as a free electron)
May 25, 2015
callithump Hear it
a noisy boisterous band or parade
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