1. Of or relating to an age or period of 100 years.
2. Occurring once every 100 years: a centennial commemoration.
3. Of or relating to a 100th anniversary.
A 100th anniversary or a celebration of it.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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