semicentennial

Definitions of semicentennial
1

adj of or relating to or marking the 50th anniversary

Synonyms:
semicentenary

n the 50th anniversary (or the celebration of it)

Synonyms:
semicentenary
Type of:
anniversary, day of remembrance
the date on which an event occurred in some previous year (or the celebration of it)

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.