Anniversary

//ˌænɪˈvɝs(ə)ɹi// noun

Definitions

Noun
  1. 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. 2
    the date on which an event occurred in some previous year (or the celebration of it) wordnet
  3. 3
    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.; Such a day that commemorates a wedding. especially

    "We are celebrating our tenth anniversary today."

  4. 4
    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). broadly

    "The occasion was the six-month anniversary of the Aug. 8 coup that brought General Óscar Humberto Mejía Victores to power."

Etymology

From Middle English anniversary, from Medieval Latin anniversāria (diēs), anniversārium, from anniversārius (“yearly”), from annus (“year”) + versus, past participle of vertere (“to turn”).

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