Merriam-Webster Collegiate Dictionary - proton
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Proton
proton
noun Etymology: Greek proton, neuter of protos 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 • ~ic adjective
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1.
n. Physics a stable elementary particle with a positive electric charge, equal in magnitude to that of an electron, and occurring in all atomic nuclei. Derivatives protonic adj. Etymology: Gk, neut. of protos first ...Толковый словарь английского языка Oxford English Reference
Большой Англо-русский Русско-английский политехнический словарь
3.
протон, протонный proton magnetic resonance — хим. резонанс протонный магнитный - auroral proton - proton acceleration - proton acceptor - proton bombardment - recoil proton ...Англо-русский Русско-английский научно-технический словарь
Новый большой англо-русский словарь
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6.
(protons) A proton is an atomic particle that has a positive electrical charge. (TECHNICAL) N-COUNT ...Collins COBUILD Advanced Learner's English Dictionary
7.
~ n a very small piece of matter that carries positive electricity and that together with a neutron forms the nucleus (=central part) of an atom (- see also electron) ...Longman Dictionary of Contemporary English
8.
- 1920, coined from Gk. proton, neut. of protos "first," supposedly because hydrogen was hypothesized as a constituent of all the elements. ...Английский Этимологический словарь
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