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An instrument used to determine the relative intensity of various wavelengths in a spectrum of light.

spec′tro·pho′to·met′ric (-fō′tə-mĕt′rĭk) adj.
spec′tro·pho·tom′e·try n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(General Physics) an instrument for producing or recording a spectrum and measuring the photometric intensity of each wavelength present, esp such an instrument used for infrared, visible, and ultraviolet radiation. See also spectrometer
[C19: from spectro- + photo- + -meter]
spectrophotometric adj
ˌspectrophoˈtometry n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌspɛk troʊ foʊˈtɒm ɪ tər)

an instrument for making photometric comparisons between parts of spectra.
spec`tro•pho`to•met′ric (-təˈmɛ trɪk) adj.
spec`tro•pho`to•met′ri•cal•ly, adv.
spec`tro•pho•tom′e•try, n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.spectrophotometer - a photometer for comparing two light radiations wavelength by wavelength
photometer - measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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