Meanings
- not comparableOf or related to a 50th anniversary, occurring every 50 years.
plural semicentennials
- A 50th anniversary.
The city celebrated its semicentennial last year.
Synonyms: semicentenary, jubilee, golden anniversary, golden jubilee (50th anniversary of a coronation), golden wedding (50th anniversary of a marriage)
Synonyms & antonyms
nounA 50th anniversary.
More synonyms by meaning
adjectiveof or relating to or marking the 50th anniversary
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
From semi- (“half”) + centennial (“100 year, 100th anniversary”), q.v.
Full word history & related roots →Translations
Italian semisecolare
- semisecolareoccurring every 50 years
Cite this entry
semicentennial. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/semicentennial
“semicentennial.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/semicentennial. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “semicentennial,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/semicentennial.
Source: semicentennial on Wiktionary, CC BY-SA 4.0.