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

Definition of prolong

transitive verb

1 : to lengthen in time : continue
2 : to lengthen in extent, scope, or range

Other Words from prolong

prolongation \ (ˌ)prō-​ˌlȯŋ-​ˈgā-​shən How to pronounce prolong (audio) , prə-​ How to pronounce prolong (audio) \ noun
prolonger \ prə-​ˈlȯŋ-​ər How to pronounce prolong (audio) \ 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 Ukrainian President Volodymyr Zelensky has submitted a draft bill to prolong martial law in Ukraine until the end of summer. Katya Soldak, Forbes, 19 May 2022 And fat is known to help prolong feelings of long-term satiety, as SELF has reported. Marygrace Taylor, SELF, 30 Apr. 2022 Plus, subvariants that have yet to get a foothold in the region could further prolong this wave or a drive a new one later in the summer. Erin Allday, San Francisco Chronicle, 31 May 2022 If true, the hormone could prolong fertility and potentially delay menopause. Ryan Cross,, 19 May 2022 These departures, along with any fatalities among the Ukrainian soldiers, may prolong the siege; food, water and other supplies last longer among the few who remain. Jillian Kay Melchior, WSJ, 11 May 2022 Her stubbornness and egotism helped kick-start and prolong the massive prodemocracy protests of 2019. Timothy Mclaughlin, The Atlantic, 8 May 2022 Similarly, for induction cooktops, which are the most energy efficient option, make sure to align the size of your pan with the size of the heating element on the stove to not overuse electricity when cooking or prolong the heating process. Washington Post, 4 May 2022 Having to pay more depreciated euros for energy imports from other sources priced in dollars will only deepen and prolong such a downturn. Joseph C. Sternberg, WSJ, 21 Apr. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'prolong.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of prolong

15th century, in the meaning defined at sense 1

History and Etymology for prolong

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

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Time Traveler for prolong

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

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Last Updated

17 Jun 2022

Cite this Entry

“Prolong.” Dictionary, Merriam-Webster, Accessed 27 Jun. 2022.

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More Definitions for prolong


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

Kids Definition of prolong

: to make longer than usual or expected Medicines prolonged his life.

More from Merriam-Webster on prolong

Nglish: Translation of prolong for Spanish Speakers

Britannica English: Translation of prolong for Arabic Speakers


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