Definition of "anniversary" in английский

noun

1. 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.

2. (loosely) 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).