anniversary
US /ˌæn.əˈvɝː.sɚ.i/
UK /ˌæn.əˈvɝː.sɚ.i/
1.
記念日, 周年
the date on which an event took place in a previous year, especially one of historical or institutional importance
:
•
Today marks the 50th anniversary of the company's founding.
今日は会社の創立50周年記念日です。
•
They celebrated their wedding anniversary with a romantic dinner.
彼らはロマンチックなディナーで結婚記念日を祝いました。