prolong

verb

pro·​long prə-ˈlȯŋ How to pronounce prolong (audio)
prolonged; prolonging; prolongs

transitive verb

1
: to lengthen in time : continue
2
: to lengthen in extent, scope, or range
prolonger noun
Choose the Right Synonym for prolong

extend, lengthen, prolong, protract mean to draw out or add to so as to increase in length.

extend and lengthen imply a drawing out in space or time but extend may also imply increase in width, scope, area, or range.

extend a vacation
extend welfare services
lengthen a skirt
lengthen the workweek

prolong suggests chiefly increase in duration especially beyond usual limits.

prolonged illness

protract adds to prolong implications of needlessness, vexation, or indefiniteness.

protracted litigation

Examples of prolong in a Sentence

Additives are used to prolong the shelf life of packaged food. High interest rates were prolonging the recession.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The actors, who met while making the 2005 action film Mr. and Mrs. Smith, were eventually declared legally single by a judge in 2019 as the divorce and custody battle prolonged. Benjamin Vanhoose, People.com, 31 Dec. 2024 The country’s new leaders must recognize that a failure to meet the international community’s expectations of political reform and transparency risks prolonging the country’s exclusion, deepening its instability, and exacerbating the humanitarian crisis. Karam Shaar, Foreign Affairs, 20 Dec. 2024 And, more recently, Frank Rubio became the first American to spend more than 365 straight days in space, after he and two Russian crewmates were forced to prolong their ISS mission when their Soyuz spacecraft sprang a leak. Josh Dinner, Space.com, 18 Dec. 2024 What Happens Next Navarro is expected to file further appeals in the records case, potentially prolonging the legal battle. Thomas G. Moukawsher, Newsweek, 17 Dec. 2024 See all Example Sentences for prolong 

Word History

Etymology

Middle English, from Middle French prolonguer, from Late Latin prolongare, from Latin pro- forward + longus long

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of prolong was in the 15th century

Dictionary Entries Near prolong

Cite this Entry

“Prolong.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prolong. Accessed 18 Jan. 2025.

Kids Definition

prolong

verb
pro·​long prə-ˈlȯŋ How to pronounce prolong (audio)
: to make longer in time
prolonged the visit

More from Merriam-Webster on prolong

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