Definition of "nonagenarian" []

• A person 90 years old or between 90 and 100 years old. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Brown's ambition for the project is not in doubt – she has confirmed rumours of discussions between billionaire Barry Diller, the backer for her own online publication, the Daily Beast, and Newsweek's nonagenarian proprietor, Sidney Harman."
• "Or, if you're a Californian nonagenarian with an ambitious wife, you can buy the whole magazine for $1 (plus taking on $47m in debts)."
• "Becoming a nonagenarian isn't unthinkable: One in four of today's 65-year-olds will live to 90, and one in 10 to age 95."