The colour quality of a colour stimulus definable by its chromaticity co-ordinates, or by its dominant (or complementary) wavelength and its purity taken together.
Note: For definitions relating to Purity see Reference: C.I.E.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
Celsius (previously Centigrade)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM