tenaciousa.[L. tenax, -acis, from tenere to hold. See Tenable, and cf. Tenace.]1. Holding fast, or inclined to hold fast; inclined to retain what is in possession; as, men tenacious of their just rights.()2. Apt to retain; retentive; as, a tenacious memory.()3. Having parts apt to adhere to each other; cohesive; tough; as, steel is a tenacious metal; tar is more tenacious than oil.(Sir I. Newton.)4. Apt to adhere to another substance; glutinous; viscous; sticking; adhesive.(Cowper.)5. Niggardly; closefisted; miserly.(Ainsworth.)6. Holding stoutly to one's opinion or purpose; obstinate; stubborn.()()