autochthonous
/ɔːˈtɒkθənəs/
/ɑˈtɑkθənəs/
adjective
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Native to the place where found; indigenous.
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Originating where found; found where it originates.
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Buried in place, especially of a fossil preserved in its life position without disturbance or disarticulation.
Synonyms:
aboriginal, autochthonic, indigenous, native
Antonyms:
allochthonous