单词	proton
释义	proton noun pro·​ton ˈprō-ˌtän  : 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 protonic prō-ˈtä-nik  adjective Example Sentences Recent Examples on the Web WIMPs are believed to be heavy and slow-moving particles with masses between one and 1,000 times that of a proton, created in the early universe as other subatomic particles collided. Robert Lea, Popular Mechanics, 29 July 2022 The more sophisticated option, which the Marie device and others use, is a high-energy proton beam. Devi Shastri, Milwaukee Journal Sentinel, 17 May 2022 The first element on the periodic table, hydrogen is just a single proton and electron. Tim Fitzpatrick, The Salt Lake Tribune, 22 Apr. 2022 Normal hydrogen has one proton and no neutrons in its nucleus. David Donovan, The Conversation, 4 Apr. 2022 The positive pen interacts with both the negative electron and the positive proton. Rhett Allain, Wired, 28 Jan. 2022 Instead, Helion’s approach is to make their own 3He by creating deuterium-deuterium fusion that creates 3He + a neutron and 3H + a proton. James Conca, Forbes, 9 Nov. 2021 Pressure is also generated when hydrogen nuclei, which each have one proton, fuse with other hydrogen nuclei to form helium, which has two protons. Priyamvada Natarajan, The New York Review of Books, 15 June 2021 For the nuclear processes involved in both creating and burning deuterium, that’s where deuterium fuses with a proton to form helium-3, an uncommon, light, but stable isotope of the element helium. Ethan Siegel, Forbes, 6 Apr. 2021 See More Word History Etymology Greek prōton, neuter of prōtos first — more at proto- First Known Use 1920, in the meaning defined above Phrases Containing proton proton pump inhibitor proton synchrotron proton pump inhibitor proton synchrotron Kids Definition proton noun pro·​ton ˈprō-ˌtän  : a very small particle that exists in the nucleus of every atom and has a positive charge of electricity Medical Definition proton noun pro·​ton ˈprō-ˌtän  : 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 1.673×10−24 gram
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