- noun the science of producing and analysing spectra
- The use of spectra to yield data about celestial objects. Almost the same thing as spectrometry except that spectrometry is more quantitative.
- The branch of science dealing with the obtaining and subsequent analysis of spectra. There are many examples, including absorption spectroscopy, emission spectroscopy, nuclear magnetic resonance spectroscopy, electron spectroscopy, mass spectroscopy, gamma ray spectroscopy, laser spectroscopy, and photoacoustic spectroscopy.