antiparticle

antiparticle

English

Etymology

anti- +‎ particle

Alternative forms

• anti-particle

Pronunciation

• IPA^(key): /ˈæntiˌpɑɹtɪkəl/

Noun

antiparticle (plural antiparticles)

1. (physics) A subatomic particle corresponding to another particle with the same mass, spin and mean lifetime but with charge, parity, strangeness and other quantum numbers flipped in sign; a particle that has a reversed world line to another.
   • 1988, Stephen Hawking, A Brief History of Time: From the Big Bang to Black Holes (page 75)

     There could be whole antiworlds and antipeople made out of antiparticles. However, if you meet your antiself, don't shake hands!

Translations

a subatomic particle

Armenian: հակամասնիկ (hakamasnik) Catalan: antipartícula (ca) f Czech: antičástice f Finnish: antihiukkanen (fi) French: antiparticule (fr) f German: Antiteilchen (de) n Hungarian: antirészecske (hu) Icelandic: andeind (is) f Ido: antipartikulo (io) Italian: antiparticella (it) f Japanese: 反粒子 (はんりゅうし, hanryūshi)

Norwegian: Bokmål: antipartikkel m Nynorsk: antipartikkel m Polish: antycząstka (pl) f Portuguese: antipartícula (pt) f Romanian: antiparticulă (ro) Russian: античасти́ца (ru) f (antičastíca) Slovak: antičastica f Spanish: antipartícula (es) f Swedish: antipartikel (sv) c

Usage notes

• The symbol for an antiparticle is the symbol for the normal particle plus "bar" (e.g. pbar) or with a bar above the symbol.

See also

• self-conjugate