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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.