Definition of diffusion | Bee Dictionary of English

n (physics) the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration
n the spread of social institutions (and myths and skills) from one society to another
n the property of being diffused or dispersed
n the act of dispersing or diffusing something
the diffusion of knowledge

Then they had the kids undergo a relatively new kind of brain scan called diffusion tensor imaging, a type of magnetic resonance imaging that is used to look at dense tissues like .
Against direct radiation itself, the porous diffusion board gives no protection.
This, wrote the authors, is "the worst-case scenario for potential disease diffusion.

Secretary Moniz questioned about Paducah's Gaseous Diffusion Plant
New details have come to light on the future of Paducah's gaseous diffusion plant. The new Secretary of the Department of Energy says his office will review the proposals they have received for the facility.
June 14, 2013 - WPSD Local 6 Paducah
Jason Wu Hired to Give Hugo Boss’s Womenswear a Makeover
Jason Wu has signed on as the new creative director of Hugo Boss's womenswear line, according to a press release from the label. This was rather unexpected: Boss hasn't employed big-name designers before, and it wasn't known that Wu — who has his own eponymous ready-to-wear, shoe, accessories, and diffusion ... More »
June 10, 2013 - New York Magazine
Top Quality Cu Diffusion Barriers from Picosun in the ENIAC JU Project ESiP
ESPOO, Finland, June 9, 2013 /PRNewswire/ -- Picosun Oy, leading Atomic Layer Deposition (ALD) equipment manufacturer, reports excellent process results for copper diffusion barrier deposition. ALD materials ...
June 9, 2013 - PR Newswire via Yahoo! Finance

John Roberts in InformationWeek
The diffusion of power carries with it a diffusion of accountability,wrote chief Justice John Roberts.
Jairam Ramesh in Press Trust of India
They can train themselves over the internet. They never have to necessarily go to the training camp or speak with anybody else and that diffusion of a combination of hatred and technical skills in things like bomb-making is a dangerous... Michael Chertoff http://www.google.com/url?q=http://en.wikipedia.org/wiki/Michael_Chertoff&source=dictionary&usg=AFQjCNEqGdVq0ZaxVaP46dPLXwSGnQzi_A Wired News http://www.google.com/url?q=http://www.wired.com/news/politics/0,71958-0.html%3Ftw%3Dwn_index_4&source=dictionary&usg=AFQjCNFWLQZZcgYYj3jiNknRV2D_8n-x_Q Oct 17, 2006 27604 36514 diffusion The quickest way of lowering the cost of many renewable options is to scale up their rate of deployment and diffusion in developing countries," Environment Minister Jairam Ramesh said summarising the proceedings of the conference.