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allochthonous

[ uh-lok-thuh-nuhs ]

adjective

, Geology.
  1. not formed in the region where found. Compare autochthonous ( def 4 ).

allochthonous

/ əˈlɒkθənəs /

adjective

  1. See autochthonous
    (of rocks, deposits, etc) found in a place other than where they or their constituents were formed Compare autochthonous

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Word History and Origins

Origin of allochthonous1

1910–15; allo- + -chthonous, modeled after autochthonous

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Word History and Origins

Origin of allochthonous1

C20: from Greek allokhthon, from allo- + khthōn (genitive khthonos ) earth

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