anniversary
/ˌænɪˈvɝs(ə)ɹi/ noun A2- A day that is an exact number of years (to the day) since a given significant event occurred. Often preceded by an ordinal number indicating the number of years. · Today is the fiftieth anniversary of the end of the war.· A 'millennium' is a thousand-year anniversary.
- Such a day that commemorates a wedding. · We are celebrating our tenth anniversary today.
- A day subsequent in time to a given event by some significant period other than a year (especially as prefixed by the amount of time in question).
Plural anniversaries
From the library
I wanted to be extra good today because it’s an anniversary.
All these he bequeathed to me, with a thousand Roman crowns, which he had in ready money, on condition that I would have anniversary masses said for the repose of his soul, and that I would draw up a genealogical tree and history of his house.
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