Meaning of DIFFUSION in English

DIFFUSION

n.1 the act or an instance of diffusing; the process of being diffused.

2 Physics & Chem. the interpenetration of substances by the natural movement of their particles.

3 Anthropol. the spread of elements of culture etc. to another region or people.

Derivatives:

diffusionist n.

Etymology: ME f. L diffusio (as DIFFUSE)

Oxford English vocab.      Оксфордский английский словарь.