1. Being from 90 to 99 years old
   "the nonagenarian inhabitants of the nursing home"

1. Someone whose age is in the nineties

Derived forms: nonagenarians

See also: old

Type of: golden ager, old person, oldster [N. Amer], senior citizen

Encyclopedia: Nonagenarian

• nonrigid
• nonruminant
• nonsectarian
• nonsegmental
• nonsegregated
• nonsense
• nonsense verse
• nonsensical
• nonsensicality
• nonsensically
• nonsensitive
• nonsexual
• nonsignificant
• nonsingular matrix
• nonskid
• nonslip
• nonslippery
• nonsmoker
• nonsmoking
• nonsmoking car
• nonsocial
• nonsocial infection
• nonsolid color
• nonsolid colour
• nonsovereign