Viscosity (noun)

The thickness of a fluid.

Origin:

Late 18th century: from french viscosité, from latin viscosus 'sticky'.

Examples:

1. The viscosity of the oil was measured in order to determine its suitability for use in engines.
2. The viscosity of the syrup was affecting its flow from the bottle.
3. The viscosity of the liquid was reduced by heating it.
4. The viscosity of the blood was increased, indicating a possible health issue.
5. Scientists were studying the viscosity of the fluid in order to understand its behavior in various conditions.