sem·i·cen·ten·ni·al (s m  -sn-tn - l, sm -)adj. Marking the 50th anniversary of an event. n. A 50th anniversary or its celebration. |
semicentennial [ˌsɛmɪsɛnˈtɛnɪəl]
adj
1. (prenominal) of or relating to the 50th anniversary of some event
2. occurring once every 50 years
n
a 50th anniversary
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | semicentennial - the 50th anniversary (or the celebration of it) anniversary, day of remembrance - the date on which an event occurred in some previous year (or the celebration of it) |
| Adj. | 1. | semicentennial - of or relating to or marking the 50th anniversary |
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