from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The process of diffusing or the condition of being diffused.
- n. Needless profusion of words; prolixity.
- n. Physics The scattering of incident light by reflection from a rough surface.
- n. Physics The transmission of light through a translucent material.
- n. Physics The spontaneous intermingling of the particles of two or more substances as a result of random thermal motion.
- n. The spread of linguistic or cultural practices or innovations within a community or from one community to another.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the act of diffusing or dispersing something, or the property of being diffused or dispersed; dispersion
- n. the scattering of light by reflection from a rough surface, or by passage through a translucent medium
- n. the intermingling of the molecules of a fluid due to random thermal agitation
- n. the spread of cultural or linguistic practices, or social institutions, in one or more communities
- n. Exchange of airborne media between regions in space in an apparently random motion of a small scale.
- n. the movement of water vapor from regions of high concentration (high water vapor pressure) toward regions of lower concentration.
from the GNU version of the Collaborative International Dictionary of English
- n. The act of diffusing, or the state of being diffused; a spreading; extension; dissemination; circulation; dispersion.
- n. The act of passing by osmosis through animal membranes, as in the distribution of poisons, gases, etc., through the body. Unlike absorption, diffusion may go on after death, that is, after the blood ceases to circulate.
from The Century Dictionary and Cyclopedia
- n. The act of diffusing, or the state of being diffused.
- n. A scattering, dispersion, or dissemination, as of dust or seed, or of animals or plants.
- n. Propagation or spread, as of knowledge or doctrine.
- n. Diffuseness; prolixity.
- n. Conduction of heat.
- n. Synonyms Spread, circulation, expansion, dissemination, distribution.
- n. In psychology, the law, formulated by A. Bain, that “according as an impression is accompanied with feeling, the aroused currents diffuse themselves freely over the brain, leading to a general agitation of the moving organs, as well as affecting the viscera.”
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the spread of social institutions (and myths and skills) from one society to another
- n. (physics) the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration
- n. the property of being diffused or dispersed
- n. the act of dispersing or diffusing something
From Latin diffusionem (accusative of diffusio), from verb diffundere. (Wiktionary)