Webster
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Webster’s Revised Unabridged Dictionary · 1913

Tenacity

Te·nac′i·ty (tē·năs′ĭ·ty̆), n. [L. tenacitas: cf. F. ténacité. See Tenacious.] 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. Holland.

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.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty. Of the others, 1,362 (a word or a single letter each) were inferred by AI from the context by the dictionary’s own rules and are marked with a wavy underline (tap or point at one to see the note); the rest, which could not be inferred with confidence, are left as “?”.