spectral line
noun Optics.
a line in a spectrum due to the absorption or emission of light at a discrete frequency.
Nearby words
spectinomycin, spector, spectra, spectra yellow, spectral, spectral line, spectral luminous efficiency, spectral series, spectral type, spectre, spectrin
Origin of spectral line
First recorded in 1865–70
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Science definitions for spectral line
spectral line
[ spĕk′trəl ]
An isolated bright or dark line in a spectrograph produced by emission or absorption of light of a single wavelength, generally corresponding to a specific shift in the energy of an electron moving from one orbital to another.
The American Heritage® Science Dictionary
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