antiprotonn.

Brit.

/ˈantɪˌprəʊtɒn/, U.S.

/ˈæn(t)iˌproʊˌtɑn/,

/ˈænˌtaɪˌproʊˌtɑn/,

/ˈæn(t)əˌproʊˌtɑn/

Origin: Formed within English, by derivation. Etymons: anti- prefix, proton n.

Etymology: < anti- prefix + proton n.

Particle Physics.

The antiparticle of the proton, having the same mass as the proton and a numerically equal but negative electric charge. Cf. antiparticle n.

ΘΚΠ

the world > matter > physics > atomic physics > particle physics > particle participating in strong interaction > baryon > [noun] > proton > anti-proton

antiproton1931

1931 P. A. M. Dirac in Proc. Royal Soc. A. 133 62 Presumably the protons will have their own negative-energy states, all of which normally are occupied, an unoccupied one appearing as an anti-proton.

1955 N.Y. Times 23 Oct. e9/6 (heading) Discovery of the Anti-Proton Ends a Long Search.

2010 Nature 18 Nov. 379/4 Antihydrogen, the bound state of an antiproton and a positron, has been produced at low energies at CERN, Europe's particle-physics lab in Geneva, Switzerland, since 2002.

This entry has been updated (OED Third Edition, March 2022).

单词	antiproton
释义	antiprotonn. Brit. /ˈantɪˌprəʊtɒn/, U.S. /ˈæn(t)iˌproʊˌtɑn/, /ˈænˌtaɪˌproʊˌtɑn/, /ˈæn(t)əˌproʊˌtɑn/ Origin: Formed within English, by derivation. Etymons: anti- prefix, proton n. Etymology: < anti- prefix + proton n. Particle Physics. The antiparticle of the proton, having the same mass as the proton and a numerically equal but negative electric charge. Cf. antiparticle n. ΘΚΠ the world > matter > physics > atomic physics > particle physics > particle participating in strong interaction > baryon > [noun] > proton > anti-proton antiproton1931 1931 P. A. M. Dirac in Proc. Royal Soc. A. 133 62 Presumably the protons will have their own negative-energy states, all of which normally are occupied, an unoccupied one appearing as an anti-proton. 1955 N.Y. Times 23 Oct. e9/6 (heading) Discovery of the Anti-Proton Ends a Long Search. 2010 Nature 18 Nov. 379/4 Antihydrogen, the bound state of an antiproton and a positron, has been produced at low energies at CERN, Europe's particle-physics lab in Geneva, Switzerland, since 2002. This entry has been updated (OED Third Edition, March 2022). < n.1931
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