Meaning of allochthonous

al•loch•tho•nous

Pronunciation: (u-lok'thu-nus), [key]
— adj. Geol.
  1. not formed in the region where found. Cf. autochthonous (def. 4).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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