[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. 2019
(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