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spectrophotometer

[spek-troh-foh-tom-i-ter]
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noun
  1. an instrument for making photometric comparisons between parts of spectra.
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Origin of spectrophotometer

First recorded in 1880–85; spectro- + photometer
Related formsspec·tro·pho·to·met·ric [spek-troh-foh-tuh-me-trik] /ˌspɛk troʊˌfoʊ təˈmɛ trɪk/, adjectivespec·tro·pho·to·met·ri·cal·ly, adverbspec·tro·pho·tom·e·try, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for spectrophotometry

spectrophotometer

noun
  1. 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 radiationSee also spectrometer
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Derived Formsspectrophotometric (ˌspɛktrəʊˌfəʊtəˈmɛtrɪk), adjectivespectrophotometry, noun

Word Origin

C19: from spectro- + photo- + -meter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

spectrophotometry in Medicine

spectrophotometer

(spĕk′trō-fō-tŏmĭ-tər)
n.
  1. An instrument for measuring the intensity of light of a definite wavelength transmitted by a substance or a solution, thus providing a measure of the amount of material in the solution absorbing the light.
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Related formsspec′tro•pho′to•metric (-fō′tə-mĕtrĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.