Standard Lemma guide
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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noun
an exotic atom equivalent to a hydrogen atom with the proton replaced by a pion
Definition source: English Wiktionary via Wiktextract
Topics: chemistry, natural-sciences, physical-sciences, physics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
an onium where the bound antiparticle-particle pair is a pion and an antipion.
Definition source: English Wiktionary via Wiktextract
Topics: natural-sciences, physical-sciences, physics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Etymology tree English pion Proto-Indo-European *-om Proto-Italic *-om Latin -umder. English -ium English pionium From pion + -ium.
Across languages
1 source translations are retained for this English entry.
