noun that quality of bodies which makes them adhere to other bodies; adhesiveness; viscosity.
2. tenacity ·noun the quality or state of being tenacious; as, tenacity, or retentiveness, of memory; tenacity, or persistency, of purpose.
3. tenacity ·noun that quality of bodies which keeps them from parting without considerable force; cohesiveness; the effect of attraction;
as distinguished from brittleness, fragility, mobility, ·etc.
4. tenacity ·noun 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.