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Persistent vs Permanent - What's the difference?

persistent | permanent |

As adjectives the difference between persistent and permanent

is that persistent is obstinately refusing to give up or let go while permanent is without end, eternal.

As a noun permanent is

a chemical hair treatment imparting or removing curliness, whose effects typically last for a period of weeks; a perm.

As a verb permanent is

to perm (the hair).

persistent

English

Adjective

(en adjective)
  • Obstinately refusing to give up or let go.
  • She has had a persistent cough for weeks.
  • * {{quote-news
  • , year=2011 , date=November 10 , author=Jeremy Wilson , title= England Under 21 5 Iceland Under 21 0: match report , work=Telegraph citation , page= , passage=The most persistent tormentor was Alex Oxlade-Chamberlain, who scored a hat-trick in last month’s corresponding fixture in Iceland. His ability to run at defences is instantly striking, but it is his clever use of possession that has persuaded some shrewd judges that he is an even better prospect than Theo Walcott.}}
  • Insistently repetitive.
  • There was a persistent knocking on the door.
  • Indefinitely continuous.
  • There have been persistent rumours for years.
  • (botany) Lasting past maturity without falling off.
  • Pine cones have persistent scales.
  • *
  • The Jubulaceae have a leaf whose lobule, usually transformed into a water-sac, is normally very narrowly attached to the stem and to the dorsal lobe; indeed some Frullania'' taxa reproduce vegetatively by dropping the dorsal lobes, but not the lobules, and ''Neohattoria has caducous lobules but persistent lobes.
  • (computing) 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.
  • Once written to a disk file the data becomes persistent and it will still be there tomorrow when we run the next program.
    This way transient value becomes persistent .
  • (mathematics) Describing a fractal process that has a positive Brown function
  • (mathematics, stochastic processes, of a state) non-transient.
  • Anagrams

    * ----

    permanent

    English

    Adjective

    (en adjective)
  • Without end, eternal.
  • Nothing in this world is truly permanent .
  • Lasting for an indefinitely long time.
  • The countries are now locked in a permanent state of conflict.

    Antonyms

    * impermanent, temporary

    Derived terms

    * permanently * permanent marker * permanent wave * permanent way

    Noun

    (wikipedia permanent) (en noun)
  • A chemical hair treatment imparting or removing curliness, whose effects typically last for a period of weeks; a perm.
  • * 1943 , (Raymond Chandler), The High Window , Penguin 2005, p. 8:
  • She had pewter-coloured hair set in a ruthless permanent , a hard beak and large moist eyes with the sympathetic expression of wet stones.
  • (linear algebra, combinatorics) Given an n \times n matrix a_{ij} \,, the sum over all permutations \pi \, of \prod_{i=1}^n{a_{i\pi(i)}}.
  • See also

    * determinant * ephemeral * relaxer * temporary

    Verb

    (en verb)
  • (dated) To perm (the hair).