Phrase 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 physical constant, the approximate distance between the proton and electron of a hydrogen atom in its ground state, equal to about 53 picometers.
Definition source: English Wiktionary via Wiktextract
Usage: physical
Qualifier: quantum mechanics
Topics: chemistry, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
After physicist Niels Bohr.
Across languages
1 source translations are retained for this English entry.
