Meanings
- uncountableA form of helium where one of the electrons is replaced by an antiproton.
Cite this entry
antiprotonic helium. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/antiprotonic%20helium
“antiprotonic helium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/antiprotonic%20helium. Accessed November 5, 2026.
WatkinsX Dictionary, s.v. “antiprotonic helium,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/antiprotonic%20helium.
Source: antiprotonic helium on Wiktionary, CC BY-SA 4.0.