Meanings
nounallochthon (plural allochthons)
plural allochthons
- geographyA geological formation not formed in the region where found and moved to its present location by tectonic forces. Compare autochthon.
Origin
1940–45; back formation from allochthonous.
Full word history & related roots →Cite this entry
APA
allochthon. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/allochthon
MLA
“allochthon.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/allochthon. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “allochthon,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/allochthon.
Source: allochthon on Wiktionary, CC BY-SA 4.0.