noun, plural vis·cos·i·ties.
- the property of a fluid that resists the force tending to cause the fluid to flow.
- the measure of the extent to which a fluid possesses this property.
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Origin of viscosity
OTHER WORDS FROM viscosityhy·per·vis·cos·i·ty, noun
Words nearby viscosity
Example sentences from the Web for viscosity
That viscosity limit depends on the Planck constant, a number at the heart of quantum mechanics, the math that governs physics on very small scales.Fundamental constants place a new speed limit on sound|Emily Conover|October 9, 2020|Science News
He showed that the knots, links and writhing — ignoring the twisting — don’t lose their combined helicity to viscosity.
For half a century it’s been known that vortex helicity is conserved in an ideal fluid — basically, a fluid that has no viscosity, meaning it offers no resistance to an object pushing through it.
The lab has also developed various mixtures of magnetic particles and fluids that have “odd viscosity” — a sort of frictionless viscosity that enables waves to travel across the surface of the mixture without losing any energy.
That means its viscosity — how thick it is — changes when force is applied to it.
A viscous precipitate forms which frequently loses its viscosity when heat is applied.The Elements of Bacteriological Technique|John William Henry Eyre
The variation of viscosity with strength of solution was also studied with one or two typical gums.
Trea′cle-sleep, a sweet and refreshing sleep; Trea′cliness, viscosity.
What relationship the viscosity of the blood has to the rate and volume of flow is not fully understood.Arteriosclerosis and Hypertension:|Louis Marshall Warfield
These numbers do not show any marked connection between the viscosity, etc., of a gum and its specific rotatory power.
British Dictionary definitions for viscosity
noun plural -ties
- the extent to which a fluid resists a tendency to flow
- Also called: absolute viscosity a measure of this resistance, equal to the tangential stress on a liquid undergoing streamline flow divided by its velocity gradient. It is measured in newton seconds per metre squaredSymbol: η See also kinematic viscosity, specific viscosity