'Prolongation' definitions:

Definition of 'prolongation'

From: WordNet
noun
The act of prolonging something; "there was an indefinite prolongation of the peace talks" [syn: prolongation, protraction, perpetuation, lengthening]
noun
Amount or degree or range to which something extends; "the wire has an extension of 50 feet" [syn: extension, lengthiness, prolongation]
noun
The consequence of being lengthened in duration [syn: lengthiness, prolongation, continuation, protraction]

Definition of 'Prolongation'

From: GCIDE
  • Prolongation \Pro`lon*ga"tion\, n. [F. prolongation.] [1913 Webster]
  • 1. The act of lengthening in space or in time; extension; protraction. --Bacon. [1913 Webster]
  • 2. That which forms an additional length. [1913 Webster]