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

/ ăn′tĭ-măt′ər /

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

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

They come in three types—electron, muon, and tau—that morph into one another, a phenomenon that might help explain how the universe generated more matter than antimatter.

From Science Magazine

Physicists had learned that every fundamental particle seems to have an antimatter counterpart, an idea Segrè would later earn a Nobel Prize for verifying.

From Science Magazine