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?

DIFFUSE definition: to pour out and spread, as a fluid. See examples of diffuse used in a sentence.

DIFFUSED definition: 1. past simple and past participle of diffuse 2. to (cause something to) spread in many directions…. Learn more.

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, …

If something such as knowledge or information is diffused, or if it diffuses somewhere, it is made known over a wide area or to a lot of people. Over time, the technology is diffused and …

To cause to spread out freely: smoke that is diffused throughout the room. 2. To make known to or cause to be used by large numbers of people; disseminate: diffuses ideas over the internet. …

To become widely dispersed; spread out: The hormone diffuses throughout the body. 2. Physics To undergo diffusion. 1. Widely spread or scattered; not concentrated: Diffuse light is often …

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

There are six meanings listed in OED's entry for the adjective diffused, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

Definition of diffuse verb from the Oxford Advanced Learner's Dictionary. [transitive, intransitive] diffuse (something) (formal) to spread something or become spread widely in all directions. …