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Meaning of tenacious

te•na•cious

Pronunciation: (tu-nā'shus), [key]
— adj.
  1. holding fast; characterized by keeping a firm hold (often fol. by of&hasp;): a tenacious grip on my arm; tenacious of old habits.
  2. highly retentive: a tenacious memory.
  3. pertinacious, persistent, stubborn, or obstinate.
  4. adhesive or sticky; viscous or glutinous.
  5. holding together; cohesive; not easily pulled asunder; tough.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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