'Prolong' definitions:

Definition of 'prolong'

(from WordNet)
verb
Lengthen in time; cause to be or last longer; "We prolonged our stay"; "She extended her visit by another day"; "The meeting was drawn out until midnight" [syn: prolong, protract, extend, draw out]
verb
Lengthen or extend in duration or space; "We sustained the diplomatic negotiations as long as possible"; "prolong the treatment of the patient"; "keep up the good work" [syn: prolong, sustain, keep up]

Definition of 'Prolong'

From: GCIDE
  • Prolong \Pro*long"\, v. t. [imp. & p. p. Prolonged; p. pr. & vb. n. Prolonging.] [F. prolonger, L. prolongare; pro before, forth + longus long. See Long, a., and cf. Prolongate, Purloin. ] [1913 Webster]
  • 1. To extend in space or length; as, to prolong a line. [1913 Webster]
  • 2. To lengthen in time; to extend the duration of; to draw out; to continue; as, to prolong one's days. [1913 Webster]
  • Prolong awhile the traitor's life. --Shak. [1913 Webster]
  • The unhappy queen with talk prolonged the night. --Dryden. [1913 Webster]
  • 3. To put off to a distant time; to postpone. --Shak. [1913 Webster]