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TOEFL IELTS BNC: 11715 COCA: 12366

diffuse

1 diffuse /dɪˈfjuːs/ adjective
1 diffuse
/dɪˈfjuːs/
adjective
Learner's definition of DIFFUSE
[more diffuse; most diffuse]
: spread out over a large space : not concentrated in one area散开的;扩散的;弥漫的

— diffusely

adverb

— diffuseness

noun [noncount]
2 diffuse /dɪˈfjuːz/ verb
diffuses; diffused; diffusing
2 diffuse
/dɪˈfjuːz/
verb
diffuses; diffused; diffusing
Learner's definition of DIFFUSE
: to spread out : to move freely throughout a large area扩散;弥漫
[no object]
[+ object]
: to exist or be known throughout an area传播;散布
[no object]
[+ object]
[+ object] : to cause (light) to be soft and spread out使(光线)漫射;使(光线)扩散

— diffusion

/dɪˈfjuːʒən/ noun [noncount]
TOEFL IELTS BNC: 11715 COCA: 12366

diffuse

1 of 2

adjective

dif·​fuse di-ˈfyüs How to pronounce diffuse (audio)
1
: being at once verbose and ill-organized
a diffuse report from the scene of the earthquake
2
: not concentrated or localized
diffuse lighting
diffuse sclerosis
diffusely adverb
diffuseness noun

diffuse

2 of 2

verb

dif·​fuse di-ˈfyüz How to pronounce diffuse (audio)
diffused; diffusing

transitive verb

1
a
: to pour out and permit or cause to spread freely
a drop of blue dye diffused in a glass of water
b
: extend, scatter
diffusing their ideas throughout the continent
c
: to spread thinly or wastefully
a government in which power is diffused
2
physics : to subject to diffusion (see diffusion sense 3)
especially : to break up and distribute (incident light) by reflection
put up a screen to diffuse the light

intransitive verb

1
: to spread out or become transmitted especially by contact
The civilization diffused westward.
2
: to undergo diffusion
heat from the radiator diffusing throughout the room
diffusible adjective
Choose the Right Synonym for diffuse

wordy, verbose, prolix, diffuse mean using more words than necessary to express thought.

wordy may also imply loquaciousness or garrulity.

a wordy speech

verbose suggests a resulting dullness, obscurity, or lack of incisiveness or precision.

the verbose position papers

prolix suggests unreasonable and tedious dwelling on details.

habitually transformed brief anecdotes into prolix sagas

diffuse stresses lack of compactness and pointedness of style.

diffuse memoirs that are so many shaggy-dog stories

Example Sentences

Adjective The forest was filled with a soft, diffuse light. a diffuse speech that took a great deal of time to make a very small point Verb The heat from the radiator diffuses throughout the room. The heat was diffused throughout the room. The photographer uses a screen to diffuse the light. an area of diffused light See More
Recent Examples on the Web
Adjective
First, there are two ultra-diffuse galaxies that appear to be satellite members of a massive group dominated by NGC 1052: DF2 and DF4. Ethan Siegel, Forbes, 22 June 2021 In Los Angeles County, the impacts of the pandemic have been relatively diffuse, with millions of residents suffering and grieving in isolation across a famously vast sprawl. Matthew Bloch, New York Times, 29 Jan. 2021 In large part, that’s because the CO2 in power plant emissions is relatively diffuse. Tim Mcdonnell, Quartz, 13 Aug. 2020 Kraftwerk’s studio albums have been sampled liberally (by Jay-Z, Afrika Bambaataa, Coldplay), but its influence feels even more diffuse and profound. Amanda Petrusich, The New Yorker, 6 May 2020 Like one of the smooth wood sculptures inside, its solid form twists and in some cases fractures, opening up large skylights that bring diffuse illumination into the galleries. Sam Lubell, Los Angeles Times, 2 Apr. 2020 In the United States, a younger and more diffuse population means the peak comes a bit later and doesn't rise as high per capita, but the larger population means that over 2 million people end up dead. John Timmer, Ars Technica, 17 Mar. 2020 Artificial light includes both direct lighting, such as street lights and commercial signs, and skyglow, a more diffuse illumination that spreads beyond urban centers and can be brighter than a full moon. Katie Hunt, CNN, 3 Feb. 2020 The image captures a wide array of phenomena; some fall under the category of halos, while the more diffuse shadings closer to the moon are from a corona. Washington Post, 11 Jan. 2020
Verb
These spokes will diffuse your hair and gently build volume at the roots, leaving your hair full. Marielle Marlys, Good Housekeeping, 2 Nov. 2021 Jax was clearly shocked by the encounter, as was fellow RHOBH cast member Crystal Kung-Minkoff, who attempted to diffuse the situation by walking Jax away from the women and back to his mother outside. Amethyst Tate, PEOPLE.com, 5 July 2022 Wg proteins themselves do not diffuse widely from their place of origin in the brain. William A. Haseltine, Forbes, 11 July 2022 Lauren died of something horrible, diffuse intrinsic pontine glioma, a type of incurable brain tumor that preys on children. Paul Daugherty, The Enquirer, 26 June 2022 But even when the battery is not in use, the ions gradually diffuse across this material, which is called the electrolyte. Anna Blaustein, Scientific American, 6 May 2022 It’s this uncertainty that makes our fears feel impossible to act on, that keeps us locked in contradictions and diffuse worry. Lily Houston Smith, The Atlantic, 23 June 2022 In another effort to diffuse the situation, President Joe Biden on Wednesday invoked the Defense Production Act to prioritize ingredients needed for formula production. Byalexandra Hutzler, ABC News, 20 May 2022 This will help the fridge diffuse heat better and run more efficiently. Mimi Montgomery, Washington Post, 28 June 2022 See More

Word History

Etymology

Adjective

Middle English, "dispersed, verbose (of speech or writing)," borrowed from Middle French & Latin; Middle French diffus, borrowed from Latin diffūsus "spread over a wide area, (of writing) extensive, verbose," from past participle of diffundere "to pour out over a wide surface, spread, extend, squander" — more at diffuse entry 2

Verb

Middle English, in past participle diffusid, borrowed from Latin diffūsus, past participle of diffundere "to pour out over a wide surface, spread out, extend, squander," from dif-, assimilated form of dis- dis- + fundere "to pour, shed" — more at found entry 5

First Known Use

Adjective

1612, in the meaning defined at sense 1

Verb

15th century, in the meaning defined at transitive sense 1a

Time Traveler
The first known use of diffuse was in the 15th century
TOEFL IELTS BNC: 11715 COCA: 12366

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