Viscoelasticity

Viscoelasticity is the combination of viscous flow and elastic recovery in a material. Viscoelastic materials can deform, recover, relax stress, absorb impact, and damp vibration depending on time, temperature, and loading rate.

See related terms:  
Acoustic Transmission Loss
Elastic Modulus 
Laminated Glass 
Vibration Damping 
Young’s Modulus