durometer

/D UH1 R AA1 M AH0 T ER0/
noun
  1. 1

    The measurement of the hardness or stiffness of a material, especially of plastic or rubber.

  2. 2

    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.