viscosity

noun
UK /vɪˈskɒsəti/
US /vɪˈskɑːsəti/

Viscosity is how thick or runny a liquid is.

Honey has a high viscosity, so it pours very slowly.


OTHER MEANINGS

2. The resistance of a fluid to flowing, measured scientifically.

Engineers tested the viscosity of the oil at different temperatures.

3. A thick, sticky quality in a substance.

The viscosity of the syrup made it cling to the spoon.

4. In physics, the internal friction between layers of a moving fluid.

Viscosity causes the water near the riverbank to move more slowly.