Definition of semicentennial
: a 50th anniversary or its celebration
Keep scrolling for more
Test Your Vocabulary
February 2021 Words of the Day Quiz
-
- Which is a synonym of perdure?

Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Share semicentennial
Time Traveler for semicentennial
The first known use of semicentennial was in 1859
See more words from the same year