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Noun: obsoletion
Usage: rare
  1. The process of becoming obsolete; falling into disuse or becoming out of date
    - obsolescence

Derived forms: obsoletions

Type of: degeneration, devolution

Nearest

obsessive-compulsive personality
obsessively
obsessiveness
obsessivity
obsidian
obsolesce
obsolescence
obsolescent
obsolete
obsoleteness
obsoletion
obstacle
obstacle course
obstacle race
obstetric
obstetrical
obstetrical delivery
obstetrical toad
obstetrician
obstetrics
obstinacy