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Noun prolongation has 3 senses
  1. 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
  2. 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
  3. lengthiness, prolongation, continuation, protraction - the consequence of being lengthened in duration
    --3 is a kind of duration, length
    Derived forms: verb prolong2, verb prolong1
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