extend vs prolong what difference

what is difference between extend and prolong

English

Etymology

From Middle English extenden, from Anglo-Norman extendre, estendre, from Latin extendō (I stretch out).

Pronunciation

  • IPA(key): /ɛkˈstɛnd/
  • Rhymes: -ɛnd
  • Hyphenation: ex‧tend

Verb

extend (third-person singular simple present extends, present participle extending, simple past and past participle extended)

  1. (intransitive) To increase in extent.
  2. (intransitive) To possess a certain extent; to cover an amount of space.
    The desert extended for miles in all directions.
  3. (transitive) To cause to increase in extent.
  4. (transitive) To cause to last for a longer period of time.
  5. (transitive) To straighten (a limb).
  6. (transitive) To bestow; to offer; to impart; to apply.
    to extend sympathy to the suffering
    to extend credit to a valued customer
  7. To increase in quantity by weakening or adulterating additions.
    (Can we find and add a quotation of G. P. Burnham to this entry?)
    • 1897, Alonzo Lewis, James Robinson Newhall, History of Lynn, Essex County, Massachusetts (page 155)
      [] the exalted morality of those virtuous brethren in the trade who, with consciences as weak as their own “extended” liquors, sought to convince him that to reduce the drink was a mercy to the poor deluded toper.
  8. (Britain, law) To value, as lands taken by a writ of extent in satisfaction of a debt; to assign by writ of extent.
  9. (object-oriented programming) Of a class: to be an extension or subtype of, or to be based on, a prototype or a more abstract class.
    Synonym: inherit
  10. (intransitive, US, military) To reenlist for a further period.
    • 1993, The Leatherneck (volume 76, page xxxvi)
      Two years later, back to amtracs, this time at Camp Schwab, Okinawa, and I liked it so much I extended.

Synonyms

  • enlarge
  • expand
  • increase
  • lengthen
  • stretch
  • widen

Related terms

Translations

Anagrams

  • dentex


English

Etymology

Either a back-formation from prolongation, or from Old French prolonguer or porloignier, from Latin prōlongō, from prō + longō. Doublet of purloin.

Pronunciation

  • (General American) IPA(key): /pɹoʊˈlɔŋ/
  • (Received Pronunciation) IPA(key): /pɹəʊˈlɒŋ/
  • (cotcaught merger, Canada) IPA(key): /pɹoʊˈlɑŋ/
  • Rhymes: -ɒŋ
  • Hyphenation: pro‧long

Verb

prolong (third-person singular simple present prolongs, present participle prolonging, simple past and past participle prolonged)

  1. (transitive) To extend in space or length.
  2. (transitive) To lengthen in time; to extend the duration of
    Synonym: draw out
  3. (transitive) To put off to a distant time; to postpone.
  4. (intransitive) To become longer; lengthen.

Derived terms

Translations

References

  • prolong in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
  • prolong in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.

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