English edit

Etymology edit

obsolete +‎ -ion

Noun edit

obsoletion (countable and uncountable, plural obsoletions)

  1. Obsolescence.
    • 2005, System of a Down (lyrics and music), “B.Y.O.B.”:
      Hangers sitting, dripped in oil / Crying, "freedom" / Handed to obsoletion / Still you feed us lies from the tablecloth