prolongation

/ˌproʊlɔːŋˈɡeɪʃən/
noun
  1. The act of making something last longer; an extension in time or duration.
    • Doctors recommended a prolongation of the treatment to ensure full recovery.
    • The prolongation of the meeting frustrated everyone who had other plans.
    • The prolongation of the drought caused severe water shortages.
  2. Something that extends or continues something else, especially in space or time.
    • The hallway was a long prolongation of the main entrance.
    • The new highway is a prolongation of the existing road network.
    • The ceasefire was a temporary prolongation of peace before the next conflict.
Antonyms
What does "prolongation" mean? | whatsthatwordmean | whatsthatwordmean