[sem-ee-sen-ten-ee-uh l, sem-ahy-]
- of or relating to a fiftieth anniversary.
- a fiftieth anniversary.
- the celebration of this anniversary.
Origin of semicentennial
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- (prenominal) of or relating to the 50th anniversary of some event
- occurring once every 50 years
- a 50th anniversary
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012