| n. | 1. | The quality or state of being tenacious; as, tenacity, or retentiveness, of memory; tenacity, or persistency, of purpose. |
| 2. | That quality of bodies which keeps them from parting without considerable force; cohesiveness; the effect of attraction; - as distinguished from brittleness, fragility, mobility, etc. |
| 3. | That quality of bodies which makes them adhere to other bodies; adhesiveness; viscosity. |
| 4. | (Physics) 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. |