prolongation
1. [ noun ] the act of prolonging something
Synonyms: perpetuation lengthening protraction
Examples:

"there was an indefinite prolongation of the peace talks"

Related terms: continuance perpetuate prolong
2. [ noun ] amount or degree or range to which something extends
Synonyms: lengthiness extension
Examples:

: "the wire has an extension of 50 feet"

Related terms: longness prolong
3. [ noun ] the consequence of being lengthened in duration
Synonyms: protraction continuation lengthiness
Related terms: duration continue stay prolong prolong retain
Similar spelling:   prolonged
  prolonge_knot