antiquation

From Late Latin antīquātiō, antīquātiōnem, noun of action from past-participle stem of antīquāre.[1]

English antique +‎ -ation.

antiquation (usually uncountable, plural antiquations)

1. (uncountable) The process of becoming antique or obsolete.
2. (countable) Something that is antique or obsolete.
   • 1874, Alexander Ferrier Mitchell, John Paterson Struthers, Minutes of the sessions of the Westminster assembly of divines:

     What to Planck and to many of his contemporaries seemed perfectly indifferent antiquations, have again come to be regarded as questions of engrossing interest and vital importance […]

• antiquate