- prolongation, protraction, perpetuation, lengthening - the act of prolonging something; "there was an indefinite prolongation of the peace talks"
--1 is a kind of continuance, continuation
Derived forms: verb prolong2, verb prolong1 - extension, lengthiness, prolongation - amount or degree or range to which something extends; "the wire has an extension of 50 feet"
--2 is a kind of longness
Derived form: verb prolong1 - lengthiness, prolongation, continuation, protraction - the consequence of being lengthened in duration
--3 is a kind of duration, length
Derived forms: verb prolong2, verb prolong1