- the determination of the constitution or condition of bodies and substances by means of the spectra they produce.
- the ascertaining of the number and character of the constituents combining to produce a sound spectrogram.
Origin of spectrum analysis
First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- 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