Definition of "tercentennial" [tercentennial]

• A tercentenary. (noun)
• Tercentenary. (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.

• "Flash forward to December 2076, America's tercentennial sometimes called tricentennial year."
• "While the rest of the world did retrospectives of the last decade in January, Capital Weather Gang took a bold look ahead to what the District might be like in 2076, America's tercentennial."
• "The last month of our tercentennial year rolled in quietly, with little sign of any real winter weather."