ˌdiamond anniˈversary BrE AmE noun [countable]
the date that is exactly 60 years after the date when two people were married or after some other important date
ˌdiamond anniˈversary BrE AmE noun [countable]
the date that is exactly 60 years after the date when two people were married or after some other important date
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012