resistant to flowing
Viscosity is a liquids resistance to flowing. You can think of it as friction between particles of liquid. Thicker liquids are more viscous than thinner liquids. For example, the honey pictured in the Figure below is more viscous than the vinegar. You can learn more about viscosity at this URL: http://chemed. chem. wisc. edu/chempaths/GenChem-Textbook/Viscosity-840. html .