proton

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proton proton pump proton pump inhibitor

Main Entry: pro·ton
Pronunciation: pr-tän
Function: noun
: an elementary particle that is identical with the nucleus of the hydrogen atom, that along with neutrons is a constituent of all other atomic nuclei, that carries a positive charge numerically equal to the charge of an electron, and that has a mass of 1.673x10^-24 gram
- pro·ton·ic /pr-tän-ik/ adjective