from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Originating in a place other than where it is found.
  • adj. Buried or found in a place remote from the site of formation.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of rocks, deposits, etc.; found in a place other than where they and their constituents were formed


Ancient Greek ἄλλος (allos, "other") + χθών (khthōn, "earth, ground") (Wiktionary)



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  • JM looks up allochthonous looks just to see what he can see.

    October 26, 2010

  • material (e.g. organic matter and sediment) which enters a lake from atmosphere or drainage basin.

    March 6, 2008

  • You mean the rocks all over my house are allochthonous? What about the rocks in my head?

    Seriously, thanks for listing this word!

    July 11, 2007