VocabauraVOCABAURA

diffuse

verb · adjective

Simple meaning

To spread over or through.

Pronunciation

Say it like this:

dihfyoos

Say the bold part a little louder.

US device voice
IPA pronunciation (US)

dɪfˈjus

This word is pronounced essentially the same in American and British English, so one transcription covers both.

IPA (International Phonetic Alphabet) is a standard way of writing speech sounds.

Word Review

Definition

Everyday modern meanings first, grouped by part of speech.

verb

  1. transitive

    To spread (something) over or through as in air, water, or other matter, especially by fluid motion or passive means.

  2. Spread or diffuse through

adjective

  1. Everywhere or throughout everything; not focused or concentrated.

  2. Wordy; verbose.

Word at a Glance

Difficulty
B2 · Upper Intermediate (estimated)
Frequency
Moderately Common
Typical Use
Neutral / general English

Word Aura™

How this word commonly comes across.

Aura for this meaning

This meaning: To spread (something) over or through as in air, water, or other matter, especially by fluid motion or passive means.

Used this way, diffuse is a reasonably familiar word that usually carries little praise or criticism of its own. It usually sounds natural in a wide range of settings.

Emotional tone
Neutral
Formality
Neutral
Intensity
Not strongly marked
How common
Moderately common
Connotation
No strong connotation
Usage feel
Neutral and straightforward

Word Aura describes common impressions, not a measurement. Tone changes with sentence, speaker, relationship and situation.

Share your sentence

Write your own example sentence using “diffuse”. We review each one before it appears.

Common Patterns and Combinations

How this word naturally appears with others.

Spread

diffuse through

Transmitted

diffuse radiationdiffuse reflectance

Other combinations

diffuse reflectiondiffuse scattering

Tap the highlighted word to open its own entry.

Similar Words, What’s the Difference?

Close in meaning, but not always interchangeable.

Word Family

Related forms, grouped by how they connect.

Inflected forms

Grammatical variations of the same word.

  • diffusernounInflected form

    Baffle that distributes sound waves evenly.

  • diffusedadjectiveInflected form

    Transmitted from a broad light source or reflected.

Compound terms

Established multiword terms.

  • diffusing screennounCompound term

    A transparent filter that reduces the light (or some wavelengths of the light) passing through it.

  • diffuse nebulanounCompound term

    A cluster of stars within an intricate cloud of gas and dust.

More about this wordSynonyms, forms, origin

Synonyms

Sense: to spread (something) over or through as in air

Ask Vocabaura

Understand the word your way.

What Does It Mean Here?

Words can change meaning depending on context.

Use it yourself

Knowing “diffuse” starts when you use it. Pick a next step, all free.

Dictionary data from Wiktionary via the Free Dictionary API. Simple meanings, combinations and word intelligence are built from verified reference data, no AI is used to load this page.