1. relating to or denoting a fluid whose viscosity increases when subjected to stress or shear force
Usage: technical; physics/materials science

1. a fluid that becomes more viscous when subjected to stress or shear force
Usage: technical; physics/materials science

Examples

• Cornstarch mixed with water is a classic example of a dilatant fluid.
• When you punch a dilatant substance quickly, it hardens and resists the impact.
• The dilatant properties of certain polymers make them useful in protective gear.
• Dilatant fluids are used in some body armor applications because they stiffen under sudden force.
• Unlike water, a dilatant fluid becomes thicker as you stir it faster.