Meaning of impactite

im•pact•ite

Pronunciation: (im-pak'tīt, im'pak-tīt"), [key]
— n.
  1. a glassy or crystalline material composed of slag and meteoric materials, produced by the impact of a meteorite striking the earth.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.