Diffuse means "not concentrated or localized"; it comes from the Latin word diffūsus ("spread over a wide area"). What is the difference between diffuse and infuse?

When something is diffused, it's mixed in, and when you drop propaganda pamphlets out of airplanes you're diffusing the propaganda. The adjective comes from Latin diffusus, from diffundere "to pour in …

DIFFUSING meaning: 1. present participle of diffuse 2. to (cause something to) spread in many directions: 3. to…. Learn more.

If something diffuses light, it causes the light to spread weakly in different directions. Diffusing a light also reduces its power. [VERB noun] The sun slid behind trees, its last light diffused by wintry …

dif·fused , dif·fus·ing , dif·fus·es v. tr. 1. To cause to spread out freely: smoke that is diffused throughout the room. 2. To make known to or cause to...

As a verb, diffuse means to spread something out, but also applies to spreading things such as ideas or culture so that they become widely known. When something is diffused, it's mixed in, and when you …

diffusing definition: spreading by diffusion. Check meanings, examples, usage tips, pronunciation, domains, related words.

Feb 16, 2026 · diffuse (third-person singular simple present diffuses, present participle diffusing, simple past and past participle diffused) (transitive) To spread (something) over or through as in air, water, …

to (cause to) spread or scatter widely: [no object] The light diffused into the room.[~ + object] Diffuse the light in your room to avoid glare. disseminate:[~ + object] The printing press helped diffuse …

Their culture gradually diffused [= spread] westward. The photographer uses a screen to diffuse the light.