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English definition of “diffuse”

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diffuse

verb [I or T] uk   /dɪˈfjuːz/ us  
to (cause something to) spread in many directions: Television is a powerful means of diffusing knowledge. to (cause a gas or liquid to) spread through or into a surrounding substance by mixing with it: Oxygen diffuses from the lungs into the bloodstream. The drop of red dye diffused slowly in the water.
diffusion
noun [U] uk   /dɪˈfjuː.ʒən/ us  
the process of diffusion in gases/liquids/solids

diffuse

adjective uk   /dɪˈfjuːs/ us  

diffuse adjective (SPREAD)

spread out and not directed in one place: a diffuse light The company has become large and diffuse.

diffuse adjective (NOT CLEAR)

disapproving not clear or easy to understand: a diffuse literary style
diffusely
adverb uk   /-li/ us  
(Definition of diffuse from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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