durometer noun2 •An instrument used to measure the hardness or stiffness of a material, especially of an elastomer, such as rubber. A simple durometer consists of a movable tip on a spring with a dial gauge.She tested the sample with a durometer to verify its consistency. •The measurement of the hardness or stiffness of a material, especially of plastic or rubber.They specified a 70 durometer polyurethane. formsdurometers
