Daily Almanac for
Nov 30, 2009
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au•thi•gen•ic



Pronunciation: (ô"thi-jen'ik), [key]
adj. Geol.
(of a constituent of a rock) formed in the rock where it is found. Cf. allogenic (def. 1).

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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