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 ?
Kul et al, Partridge et al and Palle et al have shown that ADC values of malignant breast lesions usually have lower restricted water diffusion and increased cellularity than those of benign lesions with normal cellularity and no restriction of water movement4-6.
These authors explained that the large concentration differences between the osmotic solution and watermelon increase the solute and water diffusion rates.
Parameters for water diffusion in sheets of PMMA at different relative humidity at room temperature determined by gravimetry and volumetric measurements, respectively.
Such behavior can be related to the viscosity of the water, which decreases with the temperature; oscillations in the behavior of this property leads to alterations in water diffusion, favoring the movement of water through the capillaries of the leaves (Goneli et al.
To actually create the brain "fingerprint," the researchers took the data from the diffusion MRI then reconstructed it to calculate the distribution of water diffusion along the fibers of the white matter (the inner parts of the brain).
4, 7 ADC is a quantitative parameter calculated from DWI that combines the effects of capillary perfusion and water diffusion.
Alternatively, a thin quartz (SiOx) coating is sometimes used to inhibit water diffusion.
The existence of the tunneling state of water shown in ORNL's study should help scientists better describe the thermodynamic properties and behavior of water in highly confined environments such as water diffusion and transport in the channels of cell membranes, in carbon nanotubes and along grain boundaries and at mineral interfaces in a host of geological environments.
Ion release depends on several factors such as the nature of the network structure and the mineral particles responsible for water sorption and solubility as well the permeability of the material to water diffusion (i.
Variations in cellular structure between benign and malignant tissue manifest as differences in water diffusion.