elli yıllık dönem

listen to the pronunciation of elli yıllık dönem
التركية - الإنجليزية
semicentennial
A 50th anniversary

The city celebrated its semicentennial last year.

Occurring every 50 years
A fiftieth anniversary
Of or pertaining to half of a century, or a period of fifty years; as, a semicentennial commemoration
{s} of or pertaining to a 50th anniversary, marking the 50th anniversary
the 50th anniversary (or the celebration of it) of or relating to or marking the 50th anniversary
{i} period of fifty years; 50th anniversary of an event; celebration of a 50th anniversary