"Toughness" is a term from materials science and engineering, and it refers to the resistance of a material to impacts or high stresses. The more "tough" a material is, the better it can withstand impacts, tensile forces, or other external factors.
Toughness is often associated with the material's capacity to absorb energy. A material is considered tough if it can absorb more energy when subjected to impact or high stress, without cracking or breaking. Toughness expresses the ability of a material to absorb energy without undergoing fracture or failure.
Toughness provides important information about material properties and plays a significant role in engineering applications, especially in structural design, material selection, and product development processes. The toughness of a material can vary depending on the type of material, its composition, and the processing methods employed.