Learn how to say Diffusionism correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word diffuse:
spread over a wide area or between a large number of people:
technologies diffuse rapidly
the problem is how to diffuse power without creating anarchy
Physics intermingle with another substance by movement, typically in a specified direction or at specified speed:
oxygen molecules diffuse across the membrane
gas is diffused into the bladder
[with object] cause (light) to spread evenly to reduce glare and harsh shadows.
1spread out over a large area; not concentrated:
the diffuse community which centred on the church
the light is more diffuse
(of disease) not localized in the body:
2lacking clarity or conciseness:
the second argument is more diffuse
late Middle English: from Latin diffus- ‘poured out’, from the verb diffundere, from dis- ‘away’ + fundere ‘pour’; the adjective via French diffus or Latin diffusus ‘extensive’, from diffundere