1

diffuse

adjective dif·fuse \ di-ˈfyüs \
Updated on: 15 Nov 2017

Definition of diffuse

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

Examples of diffuse in a Sentence

  1. The forest was filled with a soft, diffuse light.

  2. a diffuse speech that took a great deal of time to make a very small point

Recent Examples of diffuse from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'diffuse.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of diffuse

Middle English, from Latin diffusus, past participle of diffundere to spread out, from dis- + fundere to pour — more at found

Synonym Discussion of 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

2

diffuse

verb dif·fuse \ di-ˈfyüz \

Definition of diffuse

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 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

play \di-ˈfyü-zə-bəl\ adjective

Examples of diffuse in a Sentence

  1. The heat from the radiator diffuses throughout the room.

  2. The heat was diffused throughout the room.

  3. The photographer uses a screen to diffuse the light.

  4. an area of diffused light

Recent Examples of diffuse from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'diffuse.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of diffuse

Middle English diffused, past participle, from Latin diffusus, past participle — see 1diffuse


DIFFUSE Defined for English Language Learners

diffuse

adjective

Definition of diffuse for English Language Learners

  • : spread out over a large space : not concentrated in one area


diffuse

verb

Definition of diffuse for English Language Learners

  • : to spread out : to move freely throughout a large area

  • : to exist or be known throughout an area

  • : to cause (light) to be soft and spread out


DIFFUSE Defined for Kids

diffuse

verb dif·fuse \ di-ˈfyüz \

Definition of diffuse for Students

diffused; diffusing
: to spread or allow to spread freely The frosted window diffused the sunlight.

Medical Dictionary

1

diffuse

adjective dif·fuse \ dif-ˈyüs \

medical Definition of diffuse

: not concentrated or localized
  • diffuse sclerosis

2

diffuse

verb dif·fuse \ dif-ˈyüz \

medical Definition of diffuse

diffused; diffusing
transitive verb
1 : to subject (as a light beam) to diffusion
2 : to break up and distribute (incident light) by reflection (as from a rough surface)
intransitive verb
: to undergo diffusion


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