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Related to fine structure: hyperfine structure
1. Physics The splitting of atomic spectral lines into closely spaced groups around a single wavelength, caused by the magnetic moments of orbiting electrons in the nuclei.
2. Biology See ultrastructure.
(General Physics) the splitting of a spectral line into two or more closely spaced components as a result of interaction between the spin and orbital angular momenta of the atomic electrons. Compare hyperfine structure
1. a group of lines that are observed in the spectra of certain elements, as hydrogen.
2. the aggregate of components of the cytoskeleton.
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|Noun||1.||fine structure - the presence of groups of closely spaced spectrum lines observed in the atomic spectrum of certain elements; "the fine structure results from slightly different energy levels"|
spectrum line - an isolated component of a spectrum formed by radiation at a uniform frequency
atomic spectrum - (physics) a spectrum of radiation caused by electron transitions within an atom; the series of spectrum lines is characteristic of the element