Source : Webster's Revised Unabridged Dictionary (1913)

Thermoluminescence \Ther`mo*lu`mi*nes"cence\, 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 the cathode rays. --
   {-lu`mi*nes"cent}, a.