Definition of Diffusion

Babylon English
diffusion
n. distribution, dispersion, scattering; permeation of a region by fluid

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Diffusion definition was found in categories: Computer & Internet(3)  Language, Idioms & Slang(5)  Society & Culture(2)  Entertainment & Music(2)  Science & Technology(12)  Arts & Humanities(1)  Medicine(2)  Business & Finance(1)  Social Science(1)  Encyclopedia(1)  

Diffusion Definition from Computer & Internet Dictionaries & Glossaries

Integrated Circuit Terminology
Diffusion
a process whereby a substance redistributes from an area of relatively high concentration to an area of relatively low concentration due to random thermal motion. The larger the concentration gradient the faster diffusion occurs for a given temperature, conversely, the higher the temperature the faster diffusion occurs for a given concentration gradient.

Glossary of the European Information Society
Diffusion
Making information available to a wider audience about the work and outcome of a project with the aim of increasing the speed of uptake of its results.

Sound Escape Glossary of Terms
Diffusion
The scattering of sound. Diffusion reduces the sense of direction of a sound source, a useful quality in surround speakers.


Diffusion Definition from Language, Idioms & Slang Dictionaries & Glossaries

Webster's Revised Unabridged Dictionary (1913)
Diffusion
(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.
  
(n.)
The act of diffusing, or the state of being diffused; a spreading; extension; dissemination; circulation; dispersion.
  

WordNet 2.0
diffusion

Noun
1. (physics) the process of diffusing; the intermingling of molecules in gases and liquids as a result of random thermal agitation
(hypernym) natural process, natural action, action, activity
(hyponym) osmosis
(classification) physics, physical science, natural philosophy
2. the spread of social institutions (and myths and skills) from one society to another
(hypernym) spread, spreading
(classification) mythology
3. the property of being diffused or dispersed
(synonym) dissemination
(hypernym) distribution, dispersion
4. the act of dispersing or diffusing something; "the dispersion of the troops"; "the diffusion of knowledge"
(synonym) dispersion, dispersal, dissemination
(hypernym) spread, spreading
(hyponym) crop-dusting, spraying
(derivation) diffuse, spread, spread out, fan out

hEnglish - advanced version
diffusion

diffusion
\dif*fu"sion\ (?), n. [l. diffusio: cf. f. diffusion.]
1. the act of diffusing, or the state of being diffused; a spreading; extension; dissemination; circulation; dispersion. a diffusion of knowledge which has undermined superstition.
2. (physiol.) 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.


for Vocabulary Exams of KPDS, YDS,UDS (in Turkey); and SAT in America
diffusion
Dispersion

JM Welsh <=> English Dictionary
Rhaf
Rhaf = n. a spread, a diffusion

Sewyd
Sewyd = n. diffusion of stars


Diffusion Definition from Society & Culture Dictionaries & Glossaries

EPA Terms of Environment
Diffusion
The movement of suspended or dissolved particles (or molecules) from a more concentrated to a less concentrated area. The process tends to distribute the particles or molecules more uniformly.

Environmental Engineering (English ver.)
Diffusion
The movement of suspended or dissolved particles (or molecules) from a more concentrated to a less concentrated area. The process tends to distribute the particles or molecules more uniformly.


Diffusion Definition from Entertainment & Music Dictionaries & Glossaries

Guitar Glossary
Diffusion
An even distribution of sound in a room.

English to Federation-Standard Golic Vulcan
Diffusion
sasak


Diffusion Definition from Science & Technology Dictionaries & Glossaries

BioProcess International™ Glossary
diffusion
the process by which two fluids or solutions disperse and mix when put together in a single area because of random movement of molecules by intermolecular collision.

Glossary of Marine Biology
Diffusion.
The net movement of units of a substance from areas of higher concentration

Dictionary of Automotive Terms
Diffusion
the way in which innovations spread through market or non-market channels.

Agricultural Glossary/yigini2004
Diffusion
The random movement of atoms, molecules or ions due to thermal excitation. Can occur in gases and solutions.

Electrochemistry Dictionary
diffusion
"The movement of chemical species (ions or molecules ) under the influence of concentration difference. The species will move from the high concentration area to the low concentration area till the concentration is uniform in the whole phase. Diffusion in solutions is the most important phenomenon in electrochemistry, but diffusion will occur also in gases and solids. The rate of diffusion (diffusional flux) is proportional to the gradient of the concentration in the solution, with the proportionality constant called the ""diffusion coefficient."" "

Physical Geography Terms and Meanings
Diffusion
(1) Molecular mixing of one substance into another substance. (2) Redirection or refraction of solar insolation in many directions. Process cause the beam of traveling radiation to become less intense.

Electronics Terminology
Diffusion
A material transport phenomena that occurs in solids, and is caused by the continual physical motion of atoms from one position to another. This results in the flow of material from regions of high concentraion to regions of low concentration.

AJA_Glossary of Wireless, RF and Microwave Terms
Diffusion
The phenomenon of movement of matter at the atomic level from regions of high concentration to regions of low concentration.

General Chemistry Glossary
diffusion (diffuse)
 Say it 
Compare with effusion .The mixing of two substances caused by random molecular motions. Gases diffuse very quickly; liquids diffuse much more slowly, and solids diffuse at very slow (but often measurable) rates. Molecular collisions make diffusion slower in liquids and solids.

Web Dictionary of Cybernetics and Systems
Diffusion
the spread of an idea, product or process beyond first use. (Umpleby )


Rubber Glossary
Diffusion
The mixing of two or more substances (solids, liquids, gasses, or combinations thereof) due to the intermingling motion of their individual molecules. Gasses diffuse more readily than solids.

Materials Science and Engineering Glossary of Terms
diffusion
motion of atoms, ions, or vacancies through a material.


Diffusion Definition from Arts & Humanities Dictionaries & Glossaries

Glossary of Technical Theatre Terms
FROST
A diffusing filter used to soften the edges of a light beam. Different strengths of diffuser are available from many colour filter manufacturers. See silk.


Diffusion Definition from Medicine Dictionaries & Glossaries

Hepatitis Central (TM) Liver Disease Medical Glossary
Diffusion
Spreading
To spread out evenly, as in a liquid

TOXICOLOGY
Diffusion
The spontaneous movement of a substance from a high concentration gradient to a lower concentration gradient.


Diffusion Definition from Business & Finance Dictionaries & Glossaries

Raynet Business & Marketing Glossary
Diffusion
the time rate at which new products move through various adoption categories (innovators, early adopters, early majority, late majority, laggards).


Diffusion Definition from Social Science Dictionaries & Glossaries

Glossary of Sociology
DIFFUSION
The spread of cultural traits from one sociocultural system to another.


Diffusion Definition from Encyclopedia Dictionaries & Glossaries

Wikipedia English - The Free Encyclopedia
Diffusion
This article is about the physical mechanism of diffusion. For alternative meanings, see diffusion (disambiguation).
Diffusion is the net movement of particles from an area of high concentration to an area of low concentration. For example, diffusing molecules will move randomly between areas of high and low concentration but because there are more molecules in the high concentration region, more molecules will leave the high concentration region than the low concentration one. Therefore, there will be a net movement of molecules from high to low concentration. Initially, a concentration gradient—a smooth decrease in concentration from high to low—will form between the two regions. As time progresses, the gradient will grow increasingly shallow until the concentrations are equalized.

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