Quinquagenarian

ahd-5
  • noun. A person 50 years old, or in his or her fifties.
  • adjective. Of or characteristic of a person in his or her fifties.
  • The Century Dictionary and Cyclopedia
  • Being fifty years of age.
  • noun. A person aged fifty or between fifty and sixty.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. One who is between the age of 50 and 59, inclusive.
  • adjective. Being between the age of 50 and 59, inclusive.
  • adjective. Of or relating to a quinquagenarian.
  • Word Usage
    "Newsweek resurrected this idea with its cover "Diana at 50," complete with Photoshopped pictures of the quinquagenarian princess in contemporary scenes."