Standard Lemma guide

muonium

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

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1

noun

Meaning 1

An exotic atom formed when a positively charged muon (an anti-muon) and an electron are bound by their mutual electrical attraction; chemically equivalent to a light, short-lived isotope of hydrogen.

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree English muon Proto-Indo-European *-om Proto-Italic *-om Latin -umder. English -ium English muonium From muon + -ium.