1.Definition: amount or degree or range to which something extends

Related Noun(s):extension, lengthiness

Category: General

2.Definition: the act of prolonging something

"There was an indefinite prolongation of the peace talks"

Related Noun(s):perpetuation, protraction

Category: General

3.Definition: the consequence of being lengthened in duration

Related Noun(s):continuation, lengthiness, protraction

Category: General