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spectral

[spek-truh l] /ˈspɛk trəl/
adjective
1.
of or relating to a specter; ghostly; phantom.
2.
resembling or suggesting a specter.
3.
of, relating to, or produced by a spectrum or spectra.
4.
resembling or suggesting a spectrum or spectra.
Origin
1710-1720
1710-20; < Latin spectr(um) (see specter) + -al1
Related forms
spectrality, spectralness, noun
spectrally, adverb
nonspectral, adjective
nonspectrally, adverb
nonspectrality, noun
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for spectrally

spectral

/ˈspɛktrəl/
adjective
1.
of or like a spectre
2.
of or relating to a spectrum: spectral colours
3.
(physics) (of a physical quantity) relating to a single wavelength of radiation: spectral luminous efficiency
Derived Forms
spectrality (spɛkˈtrælɪtɪ), spectralness, noun
spectrally, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for spectrally

spectral

adj.

1718, "capable of seeing spectres;" 1815, "ghostly;" from spectre + -al (1). Meaning "pertaining to a spectrum" is 1832, from stem of spectrum + -al (1).

Online Etymology Dictionary, © 2010 Douglas Harper
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spectrally in Medicine

spectral spec·tral (spěk'trəl)
adj.
Of, relating to, or produced by a spectrum.


spec·tral'i·ty (-trāl'ĭ-tē) or spec'tral·ness (-trəl-nĭs) n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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