prolong

play

verb pro·long \prə-ˈlȯŋ\

Simple Definition of prolong

: to make (something) last or continue for a longer time

Source: Merriam-Webster's Learner's Dictionary

Full Definition of prolong

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

prolongation

play \(ˌ)prō-ˌlȯŋ-ˈgā-shən, prə-\ noun

prolonger

play \prə-ˈlȯŋ-ər\ noun

See prolong defined for English-language learners

See prolong defined for kids

Examples of prolong in a sentence

Additives are used to prolong the shelf life of packaged food.
High interest rates were prolonging the recession.

Origin and Etymology of prolong

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

First Known Use: 15th century

Synonym Discussion of 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>.