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Dictionary

spec•tral

Pronunciation: (spek'trul), [key]
—adj.
1. of or pertaining to a specter; ghostly; phantom.
2. resembling or suggesting a specter.
3. of, pertaining to, or produced by a spectrum or spectra.
4. resembling or suggesting a spectrum or spectra.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

spectra

spectral line

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