1. the quality of being thick and sticky due to internal friction; resistance to flow
Usage: physics; chemistry
2. the degree to which a fluid resists flow under applied force
Usage: technical

Examples

• Honey has a high viscosity compared to water.
• The viscosity of motor oil changes with temperature.
• Scientists measured the viscosity of the liquid sample.
• Cold syrup flows slowly due to its increased viscosity.
• The paint’s viscosity made it difficult to spread evenly.
• Engineers must consider fluid viscosity in pipeline design.