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 current de facto Moroccan sovereignty only prolongs Sahrawis’ exile, and an escalation would carry steep costs for all sides.—Hannah Rae Armstrong, Foreign Affairs, 4 Mar. 2025 Measles cases have risen in recent years, with 285 US cases reported last year, the most since 2019 when prolonged outbreaks among under vaccinated communities in New York threatened elimination status, according to the CDC.—Nadia Kounang, CNN, 2 Mar. 2025 Hey, the trifecta of gunshot wound, high fall, and prolonged unconsciousness in water didn’t kill James Bond, either.—Chris Klimek, Vulture, 27 Feb. 2025 Factors that will prolong the healing process include:1 Walking on the injured ankle too soon: Placing weight on the ankle too early can worsen the injury and delay healing.—Sarah Jividen, Verywell Health, 26 Feb. 2025 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
Share