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Definition of Semicentennial
1. Noun. The 50th anniversary (or the celebration of it).
2. Adjective. Of or relating to or marking the 50th anniversary.
Definition of Semicentennial
1. a. Of or pertaining to half of a century, or a period of fifty years; as, a semicentennial commemoration.
2. n. A fiftieth anniversary.
Definition of Semicentennial
1. [n -S]