prolong

[ pruh-lawng, -long ]
/ prəˈlɔŋ, -ˈlɒŋ /

verb (used with object)

to lengthen out in time; extend the duration of; cause to continue longer: to prolong one's stay abroad.
to make longer in spatial extent: to prolong a line.

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Origin of prolong

First recorded in 1375–1425; late Middle English prolongen, from Late Latin prōlongāre “to lengthen,” equivalent to prō- “forward, forth” + long(us) “long” + -ā- theme vowel + -re infinitive ending; see pro-1, long1

synonym study for prolong

1. See lengthen.

OTHER WORDS FROM prolong

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for prolong

British Dictionary definitions for prolong

prolong
/ (prəˈlɒŋ) /

verb

(tr) to lengthen in duration or space; extend

Derived forms of prolong

prolongation (ˌprəʊlɒŋˈɡeɪʃən), nounprolonger, nounprolongment, noun

Word Origin for prolong

C15: from Late Latin prōlongāre to extend, from Latin pro- 1 + longus long
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012