prolong

verb pro·long \ prə-ˈlȯŋ \

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

Examples of prolong in a Sentence

  1. Additives are used to prolong the shelf life of packaged food.

  2. High interest rates were prolonging the recession.

Recent Examples of prolong from the Web

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.

Origin and Etymology of prolong

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

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

PROLONG Defined for English Language Learners

prolong

verb

Definition of prolong for English Language Learners

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


PROLONG Defined for Kids

prolong

verb pro·long \ prə-ˈlȯŋ \

Definition of prolong for Students

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


Seen and Heard

What made you want to look up prolong? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to praise usually to excess

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!