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

To reach higher energies, physicists usually build bigger, more powerful hadron colliders that smash protons into either protons or antiprotons.

From Science Magazine

For example, antiprotons have a negative charge while protons have a positive charge.

From Science Daily

The antiprotons and positrons attract, forming neutrally charged atoms of antihydrogen, the antimatter version of hydrogen.

From Scientific American

First, the team used an electric field to catch antiprotons and antielectrons generated in particle collisions.

From Science Magazine

These antiprotons are produced by colliding particles together in Cern's accelerators.

From BBC