pionium

English

Etymology

pion +‎ -ium

Noun

pionium (plural pioniums)

  1. (physics, chemistry) an exotic atom equivalent to a hydrogen atom with the proton replaced by a pion
  2. (physics) an onium where the bound antiparticle-particle pair is a pion and an antipion.

Synonyms

  • (exotic atom): pi-mu atom

Translations

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