antimatter

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an·ti·mat·ter

 (ăn′tē-măt′ər, ăn′tī-)
n.
A form of matter that is identical to ordinary matter except that it is composed of antielectrons (positrons), antiprotons, and antineutrons.

antimatter

(ˈæntɪˌmætə)
n
(General Physics) a form of matter composed of antiparticles, such as antihydrogen, consisting of antiprotons and positrons

an•ti•mat•ter

(ˈæn tiˌmæt ər, ˈæn taɪ-)

n.
matter composed only of antiparticles.
[1950–55]

an·ti·mat·ter

(ăn′tĭ-măt′ər)
A form of matter identical to ordinary matter except that its atoms have opposite electrical charges or magnetic characteristics.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.antimatter - matter consisting of elementary particles that are the antiparticles of those making up normal substances
matter - that which has mass and occupies space; "physicists study both the nature of matter and the forces which govern it"
antiparticle - a particle that has the same mass as another particle but has opposite values for its other properties; interaction of a particle and its antiparticle results in annihilation and the production of radiant energy
Translations

antimatter

[ˈæntɪˌmætəʳ] Nantimateria f

antimatter

[ˈæntimætər] nantimatière f

antimatter

[ˈæntɪˌmætəʳ] nantimateria