Dictionary
spectral line
noun
Definition of SPECTRAL LINE
: one of a series of linear images formed by a spectrograph or similar instrument and corresponding to a narrow portion of the spectrum of the radiation emitted or absorbed by a particular source
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First Known Use of SPECTRAL LINE
1849
Medical Dictionary
spectral line
noun
Medical Definition of SPECTRAL LINE
: one of a series of linear images of the narrow slit of a spectrograph or similar instrument corresponding to a component of the spectrum of the radiation emitted by a particular source
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