prolong

 
Pronunciation: /prəˈlɒŋ/

verb

[with object]
  • extend the duration of: an idea which prolonged the life of the engine by many years
  • technical extend in spatial length: the line of his lips was prolonged in a short red scar

Derivatives

prolongation

Pronunciation: /prəʊlɒŋˈgeɪʃ(ə)n/
noun

prolonger

noun

Origin:

late Middle English: from Old French prolonguer, from late Latin prolongare, from pro- 'forward, onward' + longus 'long'