Meaning of triboluminescence

tri•bo•lu•mi•nes•cence

Pronunciation: (trī"bō-l"mu-nes'uns, trib"ō-), [key]
— n. Physics.
  1. luminescence produced by friction, usually within a crystalline substance.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.