diffusion

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diffusion
In the process of diffusion of a single solute, a concentration of molecules on one side of a membrane (top) will move through a membrane (center) until there is equilibrium on both sides (bottom).

dif·fu·sion

 (dĭ-fyo͞o′zhən)
n.
1. The process of diffusing or the condition of being diffused: the diffusion of new technology around the world.
2. Physics
a. The scattering of incident light by reflection from a rough surface.
b. The transmission of light through a translucent material.
c. The spontaneous intermingling of the particles of two or more substances as a result of random thermal motion.
3. The spread of linguistic or cultural practices or innovations within a community or from one community to another.

dif·fu′sion·al adj.

diffusion

(dɪˈfjuːʒən)
n
1. the act or process of diffusing or being diffused; dispersion
2. verbosity
3. (General Physics) physics
a. the random thermal motion of atoms, molecules, clusters of atoms, etc, in gases, liquids, and some solids
b. the transfer of atoms or molecules by their random motion from one part of a medium to another
4. (General Physics) physics the transmission or reflection of electromagnetic radiation, esp light, in which the radiation is scattered in many directions and not directly reflected or refracted; scattering
5. (General Physics) physics Also called: diffusivity the degree to which the directions of propagation of reverberant sound waves differ from point to point in an enclosure
6. (Anthropology & Ethnology) anthropol the transmission of social institutions, skills, and myths from one culture to another

dif•fu•sion

(dɪˈfyu ʒən)

n.
1. the act of diffusing or the state of being diffused.
2. prolixity of speech or writing.
3.
a. an intermingling of particles resulting from random thermal agitation, as in the dispersion of a vapor in air.
b. a reflection or refraction of light or other radiation from an irregular surface or an erratic dispersion through a surface.
4. a soft-focus effect in a photograph or film, achieved by placing a gelatin or silk plate in front of a light or lens or by the use of filters.
5. the transmission of elements or features of one culture to another by nonviolent contact.
[1325–75; Middle English < Late Latin diffūsiō; see diffuse, -tion]

dif·fu·sion

(dĭ-fyo͞o′zhən)
1. The movement of ions or molecules from an area of higher concentration to an area of lower concentration. Small molecules and ions can move across a cell membrane by diffusion. Compare osmosis.
2.
a. The reflection of light off an irregular surface in all directions.
b. The process by which light passes through a transparent substance.
3. The spreading out of light or other radiation through an area so that its intensity becomes more or less uniform.

diffusion

1. The process of rapid random movement of the particles of a liquid or gas which eventually form a uniform mixture.
2. The mixing of substances due to the motion of their particles.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.diffusion - (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
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
osmosis - (biology, chemistry) diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal
permeation, pervasion, suffusion - the process of permeating or infusing something with a substance
transport - an exchange of molecules (and their kinetic energy and momentum) across the boundary between adjacent layers of a fluid or across cell membranes
2.diffusion - the spread of social institutions (and myths and skills) from one society to another
spread, spreading - process or result of distributing or extending over a wide expanse of space
mythology - myths collectively; the body of stories associated with a culture or institution or person
3.diffusion - the property of being diffused or dispersed
dispersion, distribution - the spatial or geographic property of being scattered about over a range, area, or volume; "worldwide in distribution"; "the distribution of nerve fibers"; "in complementary distribution"
4.diffusion - the act of dispersing or diffusing something; "the dispersion of the troops"; "the diffusion of knowledge"
spreading, spread - act of extending over a wider scope or expanse of space or time
crop-dusting, spraying - the dispersion of fungicides or insecticides or fertilizer on growing crops (often from a low-flying aircraft)

diffusion

diffusion

noun
Words or the use of words in excess of those needed for clarity or precision:
Translations

diffusion

[dɪˈfjuːʒən] N [of light, heat, information, ideas] → difusión f

diffusion

[dɪˈfjuːʒən] n
[information, knowledge] → diffusion f
[light, chemicals, molecules] → diffusion f

diffusion

n (of light, heat, rays, fluid etc)Ausbreitung f; (Chem) → Diffusion f; (of perfume, odour)Ausströmung f; (of knowledge, custom, news)Verbreitung f

diffusion

[dɪˈfjuːʒn] n (of ideas, information) → diffusione f; (of light, heat, substances) → spargimento

dif·fu·sion

n. difusión.
1. proceso de difundir;
2. diálisis a través de una membrana.

diffusion

n difusión f
References in periodicals archive ?
The researchers discovered that these vibrations, called phonons, can actually enhance the rate of water diffusion -- a kind of flow -- by more than 300%, as a result of reduced friction.
To determine the nature of water diffusion into hydrogels, the equilibrium swelling data were fitted to the following exponential equation [26, 27]:
24) Diffusion measurements become more complex when the structures restricting water diffusion have a structure themselves.
FA measures the uniformity of water diffusion throughout the brain, and low FA tends to indicate areas of axonal injury.
Therefore, the hydrophilic nature of corneocytes together with the hydrophobic environment found in the extracellular domains of the lower SC is the main reason to impede free water diffusion (4).
Trace diffusion weighted imaging (DWI) and apparent diffusion coefficient (ADC) maps confirmed the restriction of water diffusion (Figs.
Cell lysis is often the first effect of many different types of therapy, and theoretically this would lead to an increase in water diffusion, and therefore an increased ADC value.
Specifically, the trained group showed a change in the directionality of water diffusion that is consistent with increased myelination.
This confirms the fact that blanching generally increases water diffusion from the internal regions to the product surface during drying which is as reported for other fruits [5, 9, 15, 16].
The activation energy for the water diffusion of corn ears during the drying process, obtained by the variation of the drying constant with temperature, was 17,644.
In addition to regular MRI, the subjects' brains were scanned using diffusion tensor imaging (DTI), an advanced MRI method that measures water diffusion in many directions.
Hydrolytic degradation of members of the polylactide/ glycolide family proceeds through four stages as represented in Figure 2: First stage of water diffusion followed by second stage, in which oligomers with acidic end-groups autocatalyze the hydrolysis reaction.