adj, noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A 50th anniversary.

   "The city celebrated its semicentennial last year."

2. 2
   the 50th anniversary (or the celebration of it) wordnet

Adjective

1. 1
   Of or related to a 50th anniversary, occurring every 50 years. not-comparable

Adjective

1. 1
   of or relating to or marking the 50th anniversary wordnet

Synonyms

All synonyms

semicentenarygolden anniversarygolden jubilee (50th anniversary of a coronation)golden wedding (50th anniversary of a marriage)half-centuryjubilee

Example

More examples

"The city celebrated its semicentennial last year."

Etymology

From semi- (“half”) + centennial (“100 year, 100th anniversary”), q.v.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.