Meaning of DIFFUSE in English

DIFFUSE

I. dif ‧ fuse 1 /dɪˈfjuːz/ BrE AmE verb

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

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 /dɪˈfjuːʒ ə n/ noun [uncountable]

II. dif ‧ fuse 2 /dɪˈfjuːs/ BrE AmE adjective

[ Date: 1400-1500 ; Language: Latin ; Origin: diffusus ; ⇨ ↑ diffuse 1 ]

1 . spread over a large area:

The organization is large and diffuse.

2 . using a lot of words and not explaining things clearly and directly:

His writing is diffuse and difficult to understand.

—diffuseness noun [uncountable]

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.