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Date: 1300-1400
Language: Old French
Origin: diffuser, from Latin diffusus, past participle of diffundere 'to spread out'

diffuse

1 verb
     
dif‧fuse1
1 [intransitive and transitive] to make heat, light, liquid etc spread through something, or to spread like this
diffuse through/into/across
The pollutants diffuse into the soil.
2 [intransitive and transitive] to spread ideas or information among a lot of people, or to spread like this:
Their ideas diffused quickly across Europe.
3 [transitive] to make a bad feeling or situation less strong or serious:
an attempt to diffuse his anger
diffusion noun [uncountable]

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