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heterochthonous

[het-uh-rok-thuh-nuh s]
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adjective
  1. not indigenous; foreign (opposed to autochthonous): heterochthonous flora and fauna.
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Origin of heterochthonous

1890–95; hetero- + Greek chthṓn the earth, land, country + -ous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018