n. [ Gr. bi`os life + luminescence. ] a type of luminescence produced by biological or biochemical processes, such as a glowworm glow or the action of luciferase on luciferin. A well-known example is that of firefly luminescence. See also luciferin. [ PJC ]
n. [ See Luminescent. ] 1. (Physics) Any emission of light not ascribable directly to incandescence, and therefore occurring at low temperatures, as in phosphorescence and fluorescence or other luminous radiation resulting from vital processes, chemical action, friction, solution, or the influence of light or of ultraviolet or cathode rays, etc. [ Webster 1913 Suppl. ]
2. (Zool.) (a) The faculty or power of producing light by biological processes, as in the firefly and glowworm. Also called bioluminescence. (b) The light produced by biological or biochemical processes. Also called bioluminescence. [ Webster 1913 Suppl. +PJC ]
a. [ Photo- + luminescence. ] (Physics) Luminescence induced by exposure to light waves in the infrared to ultraviolet range. [ Webster 1913 Suppl. +PJC ]
n. (Physics) Luminescence exhibited by a substance on being moderately heated. It is shown esp. by certain substances that have been exposed to the action of light or to X-rays. -- Ther`mo*lu`mi*nes"cent a. [Webster 1913 Suppl.]
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