Definition of "octogenarian" []

• Being between 80 and 90 years of age. (adjective)
• A person between 80 and 90 years of age. (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.

• "According to local press reports, the police detained Mr. Touré, better known to young Senegalese protesters and the press by his stage name, Thiat, for comments he made during a large demonstration over the weekend in which he called the octogenarian Senegalese president, Abdoulaye Wade, a liar and said he was too old to govern."
• "I wasn't sure the graying old lady could take it, particularly when a certain octogenarian came rolling to a stop near the mound."
• "Obama consulted Brzezinski for advice during his campaign, calling the octogenarian Brzezinski “one of our most outstanding scholars and thinkers” and saying that he was “someone I have learned an immense amount from.”"