positronium

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Etymology

From positron +‎ -ium.

Noun

positronium (plural positroniums or positronia) (Symbol: Ps)

  1. (physics, chemistry) An exotic atom (specifically, an onium) consisting of a positron (anti-electron) and an electron, as a particle–anti-particle bound pair with no nucleus.

Derived terms

(exotic atom):

Translations

See also

(exotic atom):

(onium):

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