spectrum

synonym: vibrational spectrum
https://doi.org/10.1351/goldbook.08291

Graph of a quantity derived from the radiant power at each wavelength (frequency or wavenumber) as ordinate plotted against the wavelength (frequency or wavenumber) of electromagnetic radiation as abscissa.

Notes:
  1. In mid-infrared and Raman spectroscopy, wavenumber is mostly used today, while it is more commonly replaced by wavelength in near infrared spectroscopy.
  2. Quantities plotted include absorbance, absorption coefficient, transmittance, reflectance, luminescence.
Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 675 (https://doi.org/10.1515/pac-2019-0203)