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diffusionism

[dih-fyoo-zhuh-niz-uh m]
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noun Anthropology.
  1. the theory or principle that diffusion is the main force in cultural innovation and change.
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Origin of diffusionism

First recorded in 1935–40; diffusion + -ism
Related formsdif·fu·sion·ist, noun, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018