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/əˈlɒkθən/ · noun
(geology) A geological formation not formed in the region where found and moved to its present location by tectonic forces. Compare autochthon..
Use allochthon when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Allochthon means (geology) A geological formation not formed in the region where found and moved to its present location by tectonic forces. Compare autochthon..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use allochthon where its definition matches the intended context.
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