n. The measurement of the wavelength of electromagnetic radiation, especially any of several techniques used to analyze the structure of molecules; the measurement of spectra of things other than radiation, such as the masses of molecules and their breakdown products
the GNU version of the Collaborative International Dictionary of English
n. Art or process of using a spectrometer, of any type; -- when used alone, it usually refers to the use of a spectrometer using light in the visible, infrared, or ultraviolet region.
The Century Dictionary and Cyclopedia
n. The measurement of wave-lengths by means of a spectrometer.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the use of spectroscopes to analyze spectra
Word Usage
"Mass spectrometry is a very widely used method for small and medium-sized molecules."