Definition of nonagenarian

Definition of nonagenarian
  1. nonagenarian Noun One who is between the age of 90 and 99, inclusive. One who is in his or her tenth decade.
  2. nonagenarian Adjective Being between the age of 90 and 99, inclusive. In one's tenth decade.
  3. nonagenarian Adjective Of or relating to a nonagenarian.
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