Definition of "sexagenarian" [sex•a•ge•na•ri•an]

• A person who is 60 years old or between the ages of 60 and 70. (noun)
• Being 60 years old or between the ages of 60 and 70. (adjective)
• Of or relating to a sexagenarian. (adjective)

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.

• "To some, the idea of sexagenarian roommates having fun (and even getting laid) in their old age was too frightening to watch-but that was then, and this is now, where MILFs and even GILFs have their own video series, so how could a respectable parody producer not want to give these old broads their belated XXX bones?"
• "Seasick SteveIn 2006 sexagenarian blues musician and former tramp Steve Wold was living in Norway and recovering from a heart attack when a tape of songs he'd made for his wife found its way to the BBC."
• "They note that the MUSE artists such as Graham Nash and Jackson Browne are "misguided" and maybe worse than that, tend to be "sexagenarian.""