tricentennial[trī′sen ten′ē əl]
tricentennial definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- happening once in a period of 300 years
- lasting 300 years
a 300th anniversary or its commemoration
tricentennial definition by American Heritage Dictionary
A tercentenary event or celebration.