diffuse.
To spread (something) over or through as in air, water, or other matter, especially by fluid motion or passive means.
Meaning & usage
To spread (something) over or through as in air, water, or other matter, especially by fluid motion or passive means.
The small window diffuses light throughout the room.
Ideas are easily diffused with the help of technology.
To be spread over or through as in air, water, or other matter, especially by fluid motion or passive means.
Food coloring diffuses in water.
The riot diffused quite suddenly.
Where this word comes from
From Middle French diffuser, from Latin diffūsus, past participle of diffundere, from dis- + fundere.
Everywhere or throughout everything; not focused or concentrated.
Such a diffuse effort is unlikely to produce good results.
diffuse activity of the prefrontal cortex
Wordy; verbose.
Where this word comes from
From Middle English *diffuse (attested in adverb diffuseli), from Latin diffūsus.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.