antimatter

[an-tee-mat-er, an-tahy-]

noun

Physics.

1. matter composed only of antiparticles, especially antiprotons, antineutrons, and positrons.

antimatter

/ ˈæntɪˌmætə /

noun

1. a form of matter composed of antiparticles, such as antihydrogen, consisting of antiprotons and positrons

antimatter

1. A form of matter that consists of antiparticles.

antimatter

1. In physics, matter made of antiparticles.

Word History and Origins

Origin of antimatter¹

First recorded in 1950–55; anti- + matter

Example Sentences

Scientists believe that the answer to understanding why matter won – and we exist – lies in studying a particle called the neutrino and its antimatter opposite, the anti-neutrino.

From BBC

One question is why the universe has more matter than antimatter if the Big Bang created both in equal measure.

From Science Daily

By measuring the neutrinosand their antimatter partners, antineutrinos, in both locations, physicists can study how these particles change their type as they travel, a phenomenon known as neutrino oscillation.

From Science Daily

One type fires electrons into their antimatter counterparts, positrons, but these e+e- colliders struggle to reach high energies.

From Science Magazine

It can shed light on 'antimatter' which existed at the beginning of the Universe, and studying it could revolutionise physics, cancer treatment, and maybe even space travel.

From BBC