Photoluminescence which persists for an extremely short time after excitation.
Note: This time is generally less than about 10-8 second.
Reference: C.I.E. (extract)
Note from Guideline G1134: Referring to surface colours, G1134 provides the following further explanation of fluorscence. Fluorescence is the process by which electromagnetic radiation of one wavelength is absorbed and re-radiated at another wavelength. Sometimes a fluorescent material will absorb non-visible light and emit it as visible light. Fluorescence and ordinary reflectance of radiation take place simultaneously and at the same wavelengths.
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