Meanings
nounpositronium (plural positroniums or positronia)
plural positroniums · plural positronia
- chemistryAn exotic atom (specifically, an onium) consisting of a positron (antielectron) and an electron, as a particle–anti-particle bound pair with no nucleus.
Origin
- Englishpositr(on)
- Englishonium
- Englishpositronium
From positr(on) + -onium.
Full word history & related roots →Translations
Chinese Mandarin 電子偶素 /电子偶素, 正電子素 /正电子素
- 電子偶素 /电子偶素 (diànzǐ'ǒusù)exotic atom
- 正電子素 /正电子素 (zhèngdiànzǐsù)exotic atom
German Positronium
- Positroniumexotic atom
Hungarian pozitrónium
- pozitróniumexotic atom
Italian positronio
- positronioexotic atom
Russian позитроний
- позитроний (pozitronij)exotic atom
Spanish positronio
- positronioexotic atom
Cite this entry
APA
positronium. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/positronium
MLA
“positronium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/positronium. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “positronium,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/positronium.
Source: positronium on Wiktionary, CC BY-SA 4.0.