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Medical Term:

proton

Pronunciation: pro'ton

Definition: The positively charged unit of the nuclear mass; protons form part (or in hydrogen 1 the whole) of the nucleus of the atom around which the negative electrons revolve.

[G. ntr. of protos, first]

© Copyright 2016 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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