Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “diffuse”

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)
What is the pronunciation of diffuse?
Browse related topics

You are looking at an entry to do with Spreading and scattering, but you might be interested in these topics from the Giving and sharing topic area:

Add Cambridge dictionaries to your browser to your website

Definitions of “diffuse” in other dictionaries

Word of the Day

debut

the occasion when someone performs or presents something to the public for the first time

Word of the Day

Come on – you can do it! Phrasal verbs with ‘come’.

by Liz Walter​,
November 19, 2014
As part of an occasional series on the tricky subject of phrasal verbs, this blog looks at ones formed with the verb ‘come’. If you are reading this blog, I’m sure you already know come from, as it is one of the first things you learn in class: I come from Scotland/Spain.

Read More 

ped-text verb

November 24, 2014
to text someone while walking I’m ped-texting, I’m looking down at my phone, 75 percent of the time.

Read More