antiproton

[ an-tee-proh-ton, an-tahy- ]

noun

, Physics.

1. an elementary particle having negative charge equal in magnitude to that of the electron and having the same mass and spin as a proton; the antiparticle of the proton.

antiproton

/ ˈæntɪˌprəʊtɒn /

noun

1. the antiparticle of the proton; a particle having the same mass as the proton but an equal and opposite charge

antiproton

/ ăn′tē-prō′tŏn′,ăn′tī- /

1. The antiparticle that corresponds to the proton.

Word History and Origins

Origin of antiproton¹

First recorded in 1935–40; anti- + proton

Example Sentences

These oscillations, which reveal the charge-to-mass ratio of the antiproton, are compared with those of a trapped hydrogen ion, comprising a proton and two electrons, which give the proton charge-to-mass ratio.

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