fine structure

US:USA pronunciation: respellingUSA pronunciation: respelling(fīn)


WordReference Random House Unabridged Dictionary of American English © 2026
fine′ struc′ture  (fīn),USA pronunciation [Physics.]
  1. a group of lines that are observed in the spectra of certain elements, as hydrogen, and that are caused by various couplings of the azimuthal quantum number and the angular momentum quantum number. Cf. hyperfine structure.
  • 1915–20

'fine structure' also found in these entries (note: many are not synonyms or translations):
echelon - hyperfine structure - ultrastructure

🗣️Forum discussions with the word(s) "fine structure" in the title:


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