Cure Terms Glossary


In its widest sense, viscous means liquid-like - i.e. capable of flow. In this context it seeks to distinguish from (solid) materials which are incapable of flow. Unlike elastic materials, a viscous material flows under load and it its original shape is lost forever.

More strictly, the word viscous means having a resistance to flow, so that very viscous means having a high resistance to flow. The resistance of a liquid to flow is called its viscosity. This resistance is the internal friction within the material, and imposing a flow against this resistance results in the irreversible conversion of mechanical energy into heat.