Word.ws English Dictionary

semicentennial

UK/ˌsɛmɪsɛnˈtɛnɪəl/US/ˌsɛˌmaɪsnˈtɛniəl/

semicentennial adjective: of or related to a 50th anniversary, occurring every 50 years.

Adjective

semicentennial (not comparable)

  1. Of or related to a 50th anniversary, occurring every 50 years.

Noun

semicentennial (plural semicentennials)

  1. 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 of semicentennial

All synonyms of semicentennial

Forms of semicentennial

pluralsemicentennials

Origin of semicentennial

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

Questions about semicentennial

What does semicentennial mean?
Semicentennial means of or related to a 50th anniversary, occurring every 50 years.
What part of speech is semicentennial?
Semicentennial can be an adjective or a noun.
How do you pronounce semicentennial?
Semicentennial is pronounced /ˌsɛˌmaɪsnˈtɛniəl/ (US).

Words near semicentennial in the dictionary

  1. semicensorship
  2. semicentenarian
  3. semicentenarians
  4. semicentenaries
  5. semicentenary
  6. semicentennial
  7. semicentennials
  8. semicentral
  9. semicentralized
  10. semicenturies
  11. semicentury

Source and license

Adapted from Wiktionary: semicentennial (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “semicentennial.” Word.ws, https://word.ws/semicentennial. Based on Wiktionary, CC BY-SA 4.0.