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proton

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proton

Main Entry:: pro·ton
Pronunciation:: \ˈprō-ˌtän\
Function:: noun
Etymology:: Greek prōton, neuter of prōtos first — more at prot-
Date:: 1920

: an elementary particle that is identical with the nucleus of the hydrogen atom, that along with the neutron 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 1.673 × 10⁻²⁷ kilogram

— pro·ton·ic

Listen to the pronunciation of protonic

\prō-ˈtä-nik\ adjective

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