diffusivityn.

Brit.

/ˌdɪfjuːˈsɪvᵻti/,

/ˌdɪfjᵿˈsɪvᵻti/, U.S.

/ˌdɪfjuˈsɪvədi/

Origin: Formed within English, by derivation. Etymons: diffusive adj., -ity suffix.

Etymology: < diffusive adj. + -ity suffix.

Science.

Diffusive quality; diffusibility; spec. (with reference to a substance in a mixture or solution) the ratio of the diffusive flux in any given direction to the concentration gradient in that direction; the diffusion coefficient.See also thermal diffusivity n. at thermal adj. Compounds 1.

ΘΚΠ

the world > matter > physics > mechanics > fluid mechanics > [noun] > diffusion > ability

diffusibility1746

diffusiveness1833

diffusivity1853

1853 G. Barracano Cholera Morbus 29 The excessive diffusivity of the choleric principle has been generally acknowledged.

1874 Nature 8 Jan. 195/2 A New Method of Determining the Material and Thermal Diffusivities of Fluids, by Sir William Thomson.

1876 P. G. Tait Lect. Recent Adv. in Physical Sci. xi. 280 We may speak of the diffusivity of one substance in solution in another.

1907 London, Edinb., & Dublin Philos. Mag. 6th Ser. 14 2 The use of molecular conductivities and diffusivities for calculating molecular and atomic sizes.

1936 W. Stiles Introd. Princ. Plant Physiol. iv. 46 The value of D..at a defined temperature and concentration is called the diffusion constant, diffusivity, or coefficient of diffusion of the substance at that temperature and concentration.

1993 Jrnl. Petrol. 34 775 The diffusivity of heat in the mantle is ~10⁻⁶m²s⁻¹ and the diffusivity of chemical species is ~10⁻¹²m²s⁻¹.

2009 P. J. Mikulecky et al. AP Chem. for Dummies xii. 124 Under these conditions, the substance has properties of both a gas (high diffusivity) and a liquid (ability to dissolve solute).

This entry has been updated (OED Third Edition, March 2016; most recently modified version published online March 2022).

单词	diffusivity
释义	diffusivityn. Brit. /ˌdɪfjuːˈsɪvᵻti/, /ˌdɪfjᵿˈsɪvᵻti/, U.S. /ˌdɪfjuˈsɪvədi/ Origin: Formed within English, by derivation. Etymons: diffusive adj., -ity suffix. Etymology: < diffusive adj. + -ity suffix. Science. Diffusive quality; diffusibility; spec. (with reference to a substance in a mixture or solution) the ratio of the diffusive flux in any given direction to the concentration gradient in that direction; the diffusion coefficient.See also thermal diffusivity n. at thermal adj. Compounds 1. ΘΚΠ the world > matter > physics > mechanics > fluid mechanics > [noun] > diffusion > ability diffusibility1746 diffusiveness1833 diffusivity1853 1853 G. Barracano Cholera Morbus 29 The excessive diffusivity of the choleric principle has been generally acknowledged. 1874 Nature 8 Jan. 195/2 A New Method of Determining the Material and Thermal Diffusivities of Fluids, by Sir William Thomson. 1876 P. G. Tait Lect. Recent Adv. in Physical Sci. xi. 280 We may speak of the diffusivity of one substance in solution in another. 1907 London, Edinb., & Dublin Philos. Mag. 6th Ser. 14 2 The use of molecular conductivities and diffusivities for calculating molecular and atomic sizes. 1936 W. Stiles Introd. Princ. Plant Physiol. iv. 46 The value of D..at a defined temperature and concentration is called the diffusion constant, diffusivity, or coefficient of diffusion of the substance at that temperature and concentration. 1993 Jrnl. Petrol. 34 775 The diffusivity of heat in the mantle is ~10⁻⁶m²s⁻¹ and the diffusivity of chemical species is ~10⁻¹²m²s⁻¹. 2009 P. J. Mikulecky et al. AP Chem. for Dummies xii. 124 Under these conditions, the substance has properties of both a gas (high diffusivity) and a liquid (ability to dissolve solute). This entry has been updated (OED Third Edition, March 2016; most recently modified version published online March 2022). < n.1853
随便看	wheat-rick wheat-ridder wheat-riddle wheat-ridge wheat-riping wheat-screenings wheat-scrip wheat-seed wheat-seeding wheat-separator wheat-sheaf wheat-sieve wheat-sowing wheat-stack wheat-stalk wheat-starch wheat-straw wheat-stubble wheat-threave wheat-weevil wheat-wine wheat-worm wheatacre wheatarea wheatawn