Phrase guide

fine-structure constant

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.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

No pronunciation record was provided for this word.

1

noun

Meaning 1

The fundamental physical value α, presumed to be constant, that characterizes the strength of the electromagnetic force. Equal to about 1/137 = 0.0072973525.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Qualifier: electrodynamics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Sommerfeld's constant, electromagnetic coupling constant

Antonyms: none provided

History

Etymology

No etymology was provided for this word.

Across languages

Translations

9 source translations are retained for this English entry.

  • Bengali: সূক্ষ্ম-গঠন ধ্রুবক (śukkho-goṭhon dhrubok) — fine-structure constant
  • Dutch: fijnstructuurconstante — fine-structure constant
  • Finnish: hienorakennevakio — fine-structure constant
  • French: constante de structure fine — fine-structure constant
  • German: Feinstrukturkonstante — fine-structure constant
  • Portuguese: constante de estrutura fina — fine-structure constant
  • Russian: постоя́нная то́нкой структу́ры (postojánnaja tónkoj struktúry) — fine-structure constant
  • Spanish: constante de estructura fina — fine-structure constant
  • Swedish: finstrukturkonstanten — fine-structure constant