fine structure

/faɪn ˌstrʌktʃər/
IPA guide

Other forms: fine structures

Definitions of fine structure
  1. noun
    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”
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    type of:
    spectrum line
    an isolated component of a spectrum formed by radiation at a uniform frequency
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