Tenacity

·noun That quality of bodies which makes them adhere to other bodies; adhesiveness; viscosity.

II. Tenacity ·noun The quality or state of being tenacious; as, tenacity, or retentiveness, of memory; tenacity, or persistency, of purpose.

III. 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.

IV. 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.