from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Refusing to give up or let go; persevering obstinately.
  • adj. Insistently repetitive or continuous: a persistent ringing of the telephone.
  • adj. Existing or remaining in the same state for an indefinitely long time; enduring: persistent rumors; a persistent infection.
  • adj. Botany Lasting past maturity without falling off, as the calyx on an eggplant or the scales of a pine cone.
  • adj. Zoology Retained permanently, rather than disappearing in an early stage of development: the persistent gills of fishes.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Obstinately refusing to give up or let go.
  • adj. Insistently repetitive.
  • adj. Indefinitely continuous.
  • adj. Lasting past maturity without falling off.
  • adj. About some data or data structures: existing after the execution of the program. Remaining in existence past the lifetime of the program that creates it.
  • adj. Describing a fractal process that has a positive Brown function
  • adj. non-transient.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Inclined to persist; having staying qualities; tenacious of position or purpose.
  • adj. Remaining beyond the period when parts of the same kind sometimes fall off or are absorbed; permanent; ; -- opposed to deciduous, and caducous.

from The Century Dictionary and Cyclopedia

  • Persisting or continuing in spite of opposition, warning, remonstrance, etc.; refusing to cease or give up some action, course, or pursuit; perservering: as, a persistent beggar; persistent attempts to do something.
  • That endures; enduring.
  • Specifically— In botany, continuing without withering: opposed to caducous, deciduous, or marcescent: as, a persistent calyx (one remaining after the corolla has withered).
  • In zoology, perennial; holding to morphological character, or continuing in functional activity; not degenerate, deciduous, or caducous, as a part or an organ: as, persistent types of structure; the persistent horns of cattle or gills of newts.
  • Repeated; continual.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. retained; not shed
  • adj. never-ceasing
  • adj. stubbornly unyielding
  • adj. continually recurring to the mind


Sorry, no etymologies found.


  •  The classification - intermittent or persistent - leads us to the proper management and treatment of asthma  The basics: intermittent asthma = bronchodilators as needed persistent asthma = daily anti - inflammatory + bronchodilators as needed

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  • Learning is persistant because you can't give up.

    March 22, 2007