- The degree to which a fluid resists flow under an applied force.
- A measure of the resistance of a fluid to flow. All fluids exhibit viscosity, with most gases having low viscosity and many oils having high viscosity.
- That quality of a liquid which determines its flow properties: the higher the viscosity the less well it flows. Thus, golden syrup is more viscous than cream, which in turn has a higher viscosity than water.
- noun the state of a liquid which moves slowly
- noun the degree of fluidity of ink, glue or varnish