obsidian dating: Meaning and Definition of

obsid'ian dat"ing

Pronunciation: [key]
— Archaeol. Archaeol.
  1. a method of dating obsidian artifacts or debitage by calculating how long it has taken to produce a given thickness of a hydration layer within such matter.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.