semicentennial
Half-century anniversary mark
A semicentennial is a fiftieth anniversary or its celebration: The university marked its semicentennial with a weeklong festival.
The adjective describes things relating to such an anniversary: semicentennial commemorations.
The word combines semi- (half) with centennial (hundredth anniversary), yielding fifty years.
Half a century
- quinquagenarianPerson aged 50-59
- goldenBright yellow, or precious
- fiftiethAfter forty-ninth
- generationAge-defined peer group
era · epoch · span · duration · passage of time
Fifty-year marriage commemoration
- commemorationAct of honoring memory
- jubileeSpecial anniversary observance
- sesquicentennial150-year milestone
- tercentenary300th anniversary milestone
silver anniversary · diamond anniversary · platinum anniversary · millennial · decennial · quinquennial · memorial · observance
Fiftieth anniversary commemoration
- galaFestive formal occasion
- ceremonyFormal event marking occasions
- festivitiesCelebratory events and activities
- commemorationAct of honoring memory
pageant · banquet · convocation · parade · tribute · toast · honoring · fete
Notable point of reference
- achievementAccomplished goal or deed
- watershedDrainage area boundary
- benchmarkStandard for comparison
- cornerstoneFoundational building block
turning point · hallmark · signpost · threshold · culmination · marker · commemoration · legacy
fifty years
Half a century
- quinquagenarianPerson aged 50-59
- goldenBright yellow, or precious
- fiftiethAfter forty-ninth
generation · era · epoch · span · duration · passage of time
golden anniversary
Fifty-year marriage commemoration
- commemorationAct of honoring memory
- jubileeSpecial anniversary observance
- sesquicentennial150-year milestone
tercentenary · silver anniversary · diamond anniversary · platinum anniversary · millennial · decennial · quinquennial · memorial · observance · remembrance
golden jubilee
Fiftieth anniversary commemoration
- galaFestive formal occasion
- ceremonyFormal event marking occasions
- festivitiesCelebratory events and activities
commemoration · pageant · banquet · convocation · parade · tribute · toast · honoring · fete · extravaganza
landmark
Notable point of reference
- achievementAccomplished goal or deed
- watershedDrainage area boundary
- benchmarkStandard for comparison
cornerstone · turning point · hallmark · signpost · threshold · culmination · marker · commemoration · legacy · retrospection
- anniversarieswedding anniversary, golden anniversary, silver anniversary, first anniversary, diamond anniversary
- 50th milestonesgolden anniversary, golden jubilee
semicentennialcentennial
Hundred-year anniversary
centenary · bicentennial · first anniversary · sesquicentennial · tercentennial
century, centennial, bicentennial, tricentennial, quadricentennial