Noun
The quality or state of being tenacious; as, tenacity, or retentiveness, of memory; tenacity, or persistency, of purpose.
That quality of bodies which keeps them from parting without considerable force; cohesiveness; the effect of attraction; -- as distinguished from brittleness, fragility, mobility, etc.
That quality of bodies which makes them adhere to other bodies; adhesiveness; viscosity.
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.
Source: Webster's dictionaryLet me tell you the secret that has led me to my goal. My strength lies solely in my tenacity. Louis Pasteur
The most difficult thing is the decision to act, the rest is merely tenacity. The fears are paper tigers. You can do anything you decide to do. You can act to change and control your life; and the procedure, the process is its own reward. Amelia Earhart
I am actually not at all a man of science, not an observer, not an experimenter, not a thinker. I am by temperament nothing but a conquistador - an adventurer, if you want it translated - with all the curiosity, daring, and tenacity characteristic of a man of this sort. Sigmund Freud
To make our way, we must have firm resolve, persistence, tenacity. We must gear ourselves to work hard all the way. We can never let up. Ralph Bunche
Good luck is another name for tenacity of purpose. Ralph Waldo Emerson
The damps of autumn sink into the leaves and prepare them for the necessity of their fall; and thus insensibly are we, as years close around us, detached from our tenacity of life by the gentle pressure of recorded sorrow. Walter Savage Landor