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spectrum analysis

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noun
  1. the determination of the constitution or condition of bodies and substances by means of the spectra they produce.
  2. the ascertaining of the number and character of the constituents combining to produce a sound spectrogram.
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Origin of spectrum analysis

First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for spectrum analysis

spectrum analysis

noun
  1. the analysis of a spectrum to determine the properties of its source, such as the analysis of the emission spectrum of a substance to determine the electron distribution in its molecules
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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