TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
DIFFUSIVITY [9 records]
Record 1 - internal organization data 2014-05-23
Record 1, English
Record 1, Subject field(s)
- Thermodynamics
- Scientific Measurements and Analyses
Record 1, Main entry term, English
- thermal diffusivity
1, record 1, English, thermal%20diffusivity
correct, standardized
Record 1, Abbreviations, English
Record 1, Synonyms, English
- thermometric conductivity 2, record 1, English, thermometric%20conductivity
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The ratio of the thermal conductivity of a substance to the product of its density and specific heat. 3, record 1, English, - thermal%20diffusivity
Record number: 1, Textual support number: 1 OBS
The SI [International System of Units] unit for this property is the square metre per second. 3, record 1, English, - thermal%20diffusivity
Record number: 1, Textual support number: 2 OBS
thermal diffusivity: term and definition standardized by ISO. 4, record 1, English, - thermal%20diffusivity
Record 1, French
Record 1, Domaine(s)
- Thermodynamique
- Mesures et analyse (Sciences)
Record 1, Main entry term, French
- diffusivité thermique
1, record 1, French, diffusivit%C3%A9%20thermique
correct, feminine noun, standardized
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Rapport de la conductivité thermique d'une substance au produit de sa masse volumique par sa chaleur spécifique. 2, record 1, French, - diffusivit%C3%A9%20thermique
Record number: 1, Textual support number: 1 OBS
L'unité SI [Système international d'unités] pour cette caractéristique est le mètre carré par seconde. 2, record 1, French, - diffusivit%C3%A9%20thermique
Record number: 1, Textual support number: 2 OBS
Cette grandeur est fonction des variables d'état (température, pression [...]). 3, record 1, French, - diffusivit%C3%A9%20thermique
Record number: 1, Textual support number: 3 OBS
diffusivité thermique : terme et définition normalisés par l'ISO et l'AFNOR. 4, record 1, French, - diffusivit%C3%A9%20thermique
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Termodinámica
- Medición y análisis (Ciencias)
Record 1, Main entry term, Spanish
- difusividad térmica
1, record 1, Spanish, difusividad%20t%C3%A9rmica
correct, feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Relación entre la conductividad térmica de una sustancia y el producto de su densidad y calor específico. 1, record 1, Spanish, - difusividad%20t%C3%A9rmica
Record number: 1, Textual support number: 1 OBS
La unidad SI [Sistema internacional de unidades] para esta propiedad es el metro cuadrado por segundo. 1, record 1, Spanish, - difusividad%20t%C3%A9rmica
Record 2 - internal organization data 2008-11-25
Record 2, English
Record 2, Subject field(s)
- Fluid Mechanics and Hydraulics (Physics)
- Scientific Measurements and Analyses
- Hydrology and Hydrography
Record 2, Main entry term, English
- hydraulic diffusivity
1, record 2, English, hydraulic%20diffusivity
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- diffusivity of an aquifer 2, record 2, English, diffusivity%20of%20an%20aquifer
- diffusivity 2, record 2, English, diffusivity
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
The coefficient of transmissivity of an aquifer divided by its storage coefficient. 2, record 2, English, - hydraulic%20diffusivity
Record 2, French
Record 2, Domaine(s)
- Mécanique des fluides et hydraulique (Physique)
- Mesures et analyse (Sciences)
- Hydrologie et hydrographie
Record 2, Main entry term, French
- diffusivité
1, record 2, French, diffusivit%C3%A9
feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- diffusivité hydraulique 2, record 2, French, diffusivit%C3%A9%20hydraulique
feminine noun
- diffusivité d'un aquifère 3, record 2, French, diffusivit%C3%A9%20d%27un%20aquif%C3%A8re
feminine noun
- piézo-transmissivité hydraulique 2, record 2, French, pi%C3%A9zo%2Dtransmissivit%C3%A9%20hydraulique
feminine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Coefficient de transmissivité de l'aquifère divisé par son coefficient d'emmagasinement. 3, record 2, French, - diffusivit%C3%A9
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Mecánica de fluidos e hidráulica (Física)
- Medición y análisis (Ciencias)
- Hidrología e hidrografía
Record 2, Main entry term, Spanish
- difusividad
1, record 2, Spanish, difusividad
feminine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
- difusividad de un acuífero 1, record 2, Spanish, difusividad%20de%20un%20acu%C3%ADfero
feminine noun
- difusividad hidráulica 2, record 2, Spanish, difusividad%20hidr%C3%A1ulica
feminine noun
Record 2, Textual support, Spanish
Record number: 2, Textual support number: 1 DEF
Coeficiente de transmisividad de un acuífero dividido por su coeficiente de almacenamiento. 1, record 2, Spanish, - difusividad
Record 3 - internal organization data 2003-07-28
Record 3, English
Record 3, Subject field(s)
- Fluid Mechanics and Hydraulics (Physics)
- Meteorology
Record 3, Main entry term, English
- eddy diffusivity
1, record 3, English, eddy%20diffusivity
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- coefficient of eddy diffusion 2, record 3, English, coefficient%20of%20eddy%20diffusion
correct
- eddy diffusion coefficient 2, record 3, English, eddy%20diffusion%20coefficient
correct
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
The exchange coefficient for the diffusion of a conservative property by eddies in a turbulent flow. 3, record 3, English, - eddy%20diffusivity
Record 3, French
Record 3, Domaine(s)
- Mécanique des fluides et hydraulique (Physique)
- Météorologie
Record 3, Main entry term, French
- diffusivité turbulente
1, record 3, French, diffusivit%C3%A9%20turbulente
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
- coefficient de diffusivité turbulente 2, record 3, French, coefficient%20de%20diffusivit%C3%A9%20turbulente
correct, masculine noun
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Coefficient d'échange de la diffusion d'une propriété conservative dans un flux turbulent. 3, record 3, French, - diffusivit%C3%A9%20turbulente
Record 3, Spanish
Record 3, Campo(s) temático(s)
- Mecánica de fluidos e hidráulica (Física)
- Meteorología
Record 3, Main entry term, Spanish
- difusibilidad turbulenta
1, record 3, Spanish, difusibilidad%20turbulenta
feminine noun
Record 3, Abbreviations, Spanish
Record 3, Synonyms, Spanish
Record 3, Textual support, Spanish
Record number: 3, Textual support number: 1 DEF
Coeficiente de intercambio para la difusión de una propiedad conservadora, que se efectúa por medio de remolinos en un flujo turbulento. 1, record 3, Spanish, - difusibilidad%20turbulenta
Record 4 - internal organization data 2001-10-22
Record 4, English
Record 4, Subject field(s)
- Metrology and Units of Measure
- Fluid Mechanics and Hydraulics (Physics)
Record 4, Main entry term, English
- diffusion coefficient
1, record 4, English, diffusion%20coefficient
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
- coefficient of diffusion 2, record 4, English, coefficient%20of%20diffusion
correct
- diffusivity 3, record 4, English, diffusivity
correct
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
"Diffusivity": the rate at which molecules of a material diffuse through still air or water. 4, record 4, English, - diffusion%20coefficient
Record number: 4, Textual support number: 2 DEF
A factor of proportionality representing the amount of substance in grams diffusing across an area of one square centimeter through a unit concentration gradient in one second of time. 5, record 4, English, - diffusion%20coefficient
Record number: 4, Textual support number: 1 CONT
... the rate of diffusion of particles [in a liquid or gas] ... may be written as J = -D (delta x/delta c), where J is the flux in question, D the diffusion coefficient or diffusivity, and delta x/delta c is the gradient of concentration. 6, record 4, English, - diffusion%20coefficient
Record 4, French
Record 4, Domaine(s)
- Unités de mesure et métrologie
- Mécanique des fluides et hydraulique (Physique)
Record 4, Main entry term, French
- coefficient de diffusion
1, record 4, French, coefficient%20de%20diffusion
correct, masculine noun, standardized
Record 4, Abbreviations, French
Record 4, Synonyms, French
- diffusivité 2, record 4, French, diffusivit%C3%A9
correct, feminine noun
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
[...] la quantité d'un constituant i d'un mélange diffusé dans la direction z à travers une portion de plan de surface unitaire perpendiculaire à la direction de diffusion est proportionnelle au gradient de concentration dans cette direction: J = -D (delta C/delta z), où J représente le flux de diffusion dans la direction z (mole/cm carré . s), C la concentration du constituant i (mole/cm cube) et D un coefficient de proportionnalité appelé coefficient de diffusion, dont la valeur, pour la plupart des gaz, est comprise dans l'intervalle 0,1 à 1 cm carré/s. 3, record 4, French, - coefficient%20de%20diffusion
Record number: 4, Textual support number: 1 OBS
Le terme "coefficient de diffusion" est normalisé par l'AFNOR. 4, record 4, French, - coefficient%20de%20diffusion
Record 4, Spanish
Record 4, Campo(s) temático(s)
- Metrología y unidades de medida
- Mecánica de fluidos e hidráulica (Física)
Record 4, Main entry term, Spanish
- coeficiente de difusión
1, record 4, Spanish, coeficiente%20de%20difusi%C3%B3n
correct, masculine noun
Record 4, Abbreviations, Spanish
Record 4, Synonyms, Spanish
- difusividad 2, record 4, Spanish, difusividad
feminine noun
Record 4, Textual support, Spanish
Record number: 4, Textual support number: 1 DEF
Peso de un material, en gramos, difundido a través de un área de un centímetro cuadrado en un segundo en un gradiente de concentración unidad. 2, record 4, Spanish, - coeficiente%20de%20difusi%C3%B3n
Record 5 - internal organization data 1997-01-01
Record 5, English
Record 5, Subject field(s)
- Commercial Fishing
Record 5, Main entry term, English
- vertical eddy diffusivity 1, record 5, English, vertical%20eddy%20diffusivity
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record 5, French
Record 5, Domaine(s)
- Pêche commerciale
Record 5, Main entry term, French
- diffusivité turbulente verticale
1, record 5, French, diffusivit%C3%A9%20turbulente%20verticale
feminine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 OBS
Source : Pêches et Océans Canada. 1, record 5, French, - diffusivit%C3%A9%20turbulente%20verticale
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 1990-07-18
Record 6, English
Record 6, Subject field(s)
- Soil Science
Record 6, Main entry term, English
- capillary diffusivity
1, record 6, English, capillary%20diffusivity
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
- capillary soil water diffusivity 1, record 6, English, capillary%20soil%20water%20diffusivity
correct
Record 6, Textual support, English
Record 6, French
Record 6, Domaine(s)
- Science du sol
Record 6, Main entry term, French
- diffusivité capillaire
1, record 6, French, diffusivit%C3%A9%20capillaire
correct, feminine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 OBS
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 1988-05-10
Record 7, English
Record 7, Subject field(s)
- Environmental Studies and Analyses
- Air Pollution
- Scientific Measurements and Analyses
Record 7, Main entry term, English
- molecular coefficient of diffusivity
1, record 7, English, molecular%20coefficient%20of%20diffusivity
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 CONT
In this approach, diffusion by turbulent atmospheric motion is of a gradient type treated analogously with molecular diffusion, with the exception that the molecular coefficient of diffusivity is replaced by its turbulent counterpart. 1, record 7, English, - molecular%20coefficient%20of%20diffusivity
Record 7, French
Record 7, Domaine(s)
- Études et analyses environnementales
- Pollution de l'air
- Mesures et analyse (Sciences)
Record 7, Main entry term, French
- coefficient moléculaire de diffusion
1, record 7, French, coefficient%20mol%C3%A9culaire%20de%20diffusion
masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 1980-06-11
Record 8, English
Record 8, Subject field(s)
- Soil Science
Record 8, Main entry term, English
- soil water diffusivity 1, record 8, English, soil%20water%20diffusivity
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 OBS
The hydraulic conductivity divided by the differential water capacity, (using consistent units), or the flux of water per unit gradient of moisture content in the absence of other force fields. 1, record 8, English, - soil%20water%20diffusivity
Record 8, French
Record 8, Domaine(s)
- Science du sol
Record 8, Main entry term, French
- capacité de diffusion de l'eau dans le sol 1, record 8, French, capacit%C3%A9%20de%20diffusion%20de%20l%27eau%20dans%20le%20sol
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 OBS
Rapport de la conductivité hydraulique à la capacité de rétention différentielle de l'eau (exprimées en unités compatibles), ou la vitesse d'écoulement de l'eau par unité de gradient de la teneur en eau, en l'absence d'autres champs de force. 1, record 8, French, - capacit%C3%A9%20de%20diffusion%20de%20l%27eau%20dans%20le%20sol
Record 8, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 1976-06-19
Record 9, English
Record 9, Subject field(s)
- Water Transport
Record 9, Main entry term, English
- eddy diffusivity 1, record 9, English, eddy%20diffusivity
Record 9, Abbreviations, English
Record 9, Synonyms, English
Record 9, French
Record 9, Domaine(s)
- Transport par eau
Record 9, Main entry term, French
- diffusion tourbillonnaire
1, record 9, French, diffusion%20tourbillonnaire
feminine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
Record 9, Textual support, French
Record 9, Spanish
Record 9, Textual support, Spanish
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