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
A hypothetical particle consisting of two protons and no neutrons; a helium-2 nucleus. Presumably an intermediate step in the fusion of hydrogen into helium.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Etymology tree English di- Proto-Indo-European *per-der.? Proto-Indo-European *per-der.? Proto-Indo-European *pér Proto-Indo-European *-o Proto-Indo-European *próder. Ancient Greek πρό (pró) Ancient Greek -ᾰτος (-ătos) Ancient Greek πρῶτον (prôton)lbor. English proton English diproton From di- + proton.
