[verb dih-fyooz; adjective dih-fyoos]
verb (used with object), dif·fused, dif·fusing.
to pour out and spread, as a fluid.
to spread or scatter widely or thinly; disseminate.
Physics. to spread by diffusion.
verb (used without object), dif·fused, dif·fusing.
Physics. to intermingle by diffusion.
characterized by great length or discursiveness in speech or writing; wordy.
widely spread or scattered; dispersed.
Botany. widely or loosely spreading.
Optics. (of reflected light) scattered, as from a rough surface (opposed to specular).
Origin of diffuse
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for undiffusedrobust, fixed, full-bodied, rich, potent, complete, stuffed, total, crashed, entire, lusty, straight, strong, thick, unadulterated, undivided, whole, undiluted, undiffused, unmixed
to spread or cause to spread in all directions
to undergo or cause to undergo diffusion
to scatter or cause to scatter; disseminate; disperse
spread out over a wide area
(esp of some creeping stems) spreading loosely over a large area
characterized by or exhibiting diffusiondiffuse light; diffuse reflection
botany (of plant growth) occurring throughout a tissue
Word Origin for diffuse
C15: from Latin diffūsus spread abroad, from diffundere to pour forth, from dis- away + fundere to pour
Avoid confusion with defuse
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
1520s (transitive), 1650s (intransitive), from Latin diffusus, past participle of diffundere "to pour out or away" (see diffusion). Related: Diffused; diffusing.
early 15c., from Latin diffusus (see diffuse (v.)).
Online Etymology Dictionary, © 2010 Douglas Harper
Not limited to one tissue or location; widespread.
To spread or to be spread widely, as through a tissue.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.