: a theory in anthropology: widely separated cultural similarities are evidence of historical contact
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—diffusionist, n., adj.
/di fyooh"zheuh niz'euhm/, n. Anthropol.
the theory or principle that diffusion is the main force in cultural innovation and change.
[1935-40; DIFFUSION + -ISM]
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diffūˈsionism noun (anthropology)
The theory that diffusion is mainly responsible for cultural similarities
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Main Entry: ↑diffuse
Useful english dictionary. 2012.