Definitions for diffusion
dɪˈfyu ʒəndif·fu·sion

Princeton's WordNetRate this definition:2.2 / 10 votes

1. diffusionnoun

   (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

2. diffusionnoun

   the spread of social institutions (and myths and skills) from one society to another

3. dissemination, diffusionnoun

   the property of being diffused or dispersed

4. dispersion, dispersal, dissemination, diffusionnoun

   the act of dispersing or diffusing something

   "the dispersion of the troops"; "the diffusion of knowledge"

WiktionaryRate this definition:1.3 / 4 votes

1. diffusionnoun

   the act of diffusing or dispersing something, or the property of being diffused or dispersed; dispersion

2. diffusionnoun

   the scattering of light by reflection from a rough surface, or by passage through a translucent medium

3. diffusionnoun

   the intermingling of the molecules of a fluid due to random thermal agitation

4. diffusionnoun

   the spread of cultural or linguistic practices, or social institutions, in one or more communities

5. diffusionnoun

   Exchange of airborne media between regions in space in an apparently random motion of a small scale.

6. diffusionnoun

   the movement of water vapor from regions of high concentration (high water vapor pressure) toward regions of lower concentration.

7. Etymology: From diffusionem (accusative of diffusio), from verb diffundere.

Samuel Johnson's DictionaryRate this definition:0.0 / 0 votes

1. Diffusionnoun

   Etymology: from diffuse.

   1. Dispersion; the state of being scattered every way.

   Whereas all bodies act either by the communication of their natures, or by the impressions and signatures of their motions, the diffusion of species visible seemeth to participate more of the former operation, and the species audible of the latter. Francis Bacon, Natural History, №. 269.

   A sheet of very well sleeked marbled paper did not cast distinct colours upon the wall, nor throw its light with an equal diffusion; but threw its beams, unstained and bright, to this and that part of the wall. Robert Boyle, on Colours.

   2. Copiousness; exuberance of stile.

WikipediaRate this definition:0.0 / 0 votes

1. Diffusion

   Diffusion is the net movement of anything (for example, atoms, ions, molecules, energy) generally from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in Gibbs free energy or chemical potential. It is possible to diffuse "uphill" from a region of lower concentration to a region of higher concentration, like in spinodal decomposition. The concept of diffusion is widely used in many fields, including physics (particle diffusion), chemistry, biology, sociology, economics, and finance (diffusion of people, ideas, and price values). The central idea of diffusion, however, is common to all of these: a substance or collection undergoing diffusion spreads out from a point or location at which there is a higher concentration of that substance or collection. A gradient is the change in the value of a quantity, for example, concentration, pressure, or temperature with the change in another variable, usually distance. A change in concentration over a distance is called a concentration gradient, a change in pressure over a distance is called a pressure gradient, and a change in temperature over a distance is called a temperature gradient. The word diffusion derives from the Latin word, diffundere, which means "to spread out." A distinguishing feature of diffusion is that it depends on particle random walk, and results in mixing or mass transport without requiring directed bulk motion. Bulk motion, or bulk flow, is the characteristic of advection. The term convection is used to describe the combination of both transport phenomena. If a diffusion process can be described by Fick's laws, it's called a normal diffusion (or Fickian diffusion); Otherwise, it's called an anomalous diffusion (or non-Fickian diffusion).

ChatGPTRate this definition:0.0 / 0 votes

1. diffusion

   Diffusion is a physical process in which particles of gases, liquids, or solids intermingle as a result of their spontaneous movement caused by thermal agitation and in dissolved substances move from a region of higher concentration to a region of lower concentration. The process continues until a uniform concentration is achieved throughout.

Webster DictionaryRate this definition:1.7 / 3 votes

1. Diffusionnoun

   the act of diffusing, or the state of being diffused; a spreading; extension; dissemination; circulation; dispersion

2. Diffusionnoun

   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

U.S. National Library of MedicineRate this definition:1.0 / 2 votes

1. Diffusion

   The tendency of a gas or solute to pass from a point of higher pressure or concentration to a point of lower pressure or concentration and to distribute itself throughout the available space. Diffusion, especially FACILITATED DIFFUSION, is a major mechanism of BIOLOGICAL TRANSPORT.

The Standard Electrical DictionaryRate this definition:0.0 / 0 votes

1. Diffusion

   A term properly applied to the varying current density found in conductors of unequal cross sectional area. In electro-therapeutics it is applied to the distribution of current as it passes through the human body. Its density per cross-sectional area varies with the area and with the other factors.

Matched Categories

1. • Distribution
   • Mythology
   • Natural Process
   • Physics
   • Spread

How to pronounce diffusion?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say diffusion in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of diffusion in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of diffusion in Pythagorean Numerology is: 4

Examples of diffusion in a Sentence

1. Sarah Fischer:

   People may not notice an assault taking place, or may not perceive it as an emergency, or may experience a diffusion of responsibility, since there are so many other people present.

2. Khalid AbuLeif:

   With a concept like zero emissions and 'let's knock fossil fuels out of the picture', without clear technology diffusion and international cooperation program, you are really not helping the process.

3. David Altman:

   There is a threat of contagion, of diffusion, of these authoritarian trends, it's a profound concern.

4. Interior Minister Bernard Cazeneuve:

   Everyone agrees now that legislation that prevents the diffusion of child pornography is protecting citizens from crime. It is the same for terrorism, calling for anti-Semitism, calling for crimes, calling for murder, calling for the killing of Jews or journalists — that's not about freedom of expression. That is a criminal act.

5. Daniel J. Boorstin:

   Knowledge is not simply another commodity. On the contrary. Knowledge is never used up. It increases by diffusion and grows by dispersion.

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=diffusion
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Diffusion
3. ^ Samuel Johnson's Dictionary
   https://johnsonsdictionaryonline.com/views/search.php?term=diffusion
4. ^ Wikipedia
   https://en.wikipedia.org/wiki/Diffusion
5. ^ ChatGPT
   https://chat.openai.com
6. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/diffusion
7. ^ The Standard Electrical Dictionary
   https://www.gutenberg.org/cache/epub/26535/pg26535-images.html#:~:text=diffusion