secondary spectrum

noun

Definition of secondary spectrum

1 : the spectrum of an element in the molecular state as distinct from its atomic line spectrum
2 : residual dispersion by a lens that has been corrected as far as possible for chromatic aberration
3 : the fainter of the two superimposed spectra of a spectroscopic binary star

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Cite this Entry

“Secondary spectrum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/secondary%20spectrum. Accessed 24 Sep. 2021.

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