Meaning of PROTON in English

transcription, транскрипция: [ ˈprō-ˌtän ]


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 prō-ˈtä-nik adjective

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.