tenacity

noun5

1. •
   The quality or state of being tenacious, or persistence of purpose; tenaciousness.

   • — Our opponents may be younger, faster and less out of shape than we are, but we have something they’ll never have! — Tenure? — Tenacity! — 2009
2. •
   The quality of bodies which keeps them from parting without considerable force, as distinguished from brittleness, fragility, mobility, etc.
3. •
   The effect of this attraction, cohesiveness.
4. •
   The quality of bodies which makes them adhere to other bodies; adhesiveness, viscosity.
5. •
   The greatest longitudinal stress a substance can bear without tearing asunder, usually expressed with reference to a unit area of the cross section of the substance, as the number of pounds per square inch, or kilograms per square centimeter, necessary to produce rupture.