Definition of "centenary" [cen•te•na•ry]

• Of or relating to a 100-year period. (adjective)
• Occurring once every 100 years. (adjective)
• A 100-year period. (noun)
• A centennial. (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.

• "The bridge, restored for its centenary, is a worthy contribution to future tourism in Durango state."
• "The Carter centenary is accelerating into the homestretch."
• "Our thoughts today go also to Stockholm, where the other awards are being made, and where the centenary is being marked of the death of Alfred"