absorption spectrum

https://doi.org/10.1351/goldbook.A00043
The
wavelength
dependence of the
absorption cross-section
(or
absorption coefficient
); usually represented as a plot of
absorption cross-section
versus
wavelength
λ (or 1λ) of the light.
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2169 [Terms] [Paper]