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Webster's Dictionary (1865)

Te-năç'i-ty, n.

noun

n. [Lat. tenacitas, Fr. tenacité, Sp. tenacidad, It. tenacità. See supra.]

  1. The quality of being tenacious; retentiveness; firmness; adhesiveness.
  2. That quality of bodies which keeps them from parting without considerable force; cohesiveness; the effect of attraction; — opposed to brittleness or fragility.