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anniversary

nouncommon in dialogue

  • United Kingdom//ˌanɪˈvəːs(ə)ɹi//
  • Canada//ˌænɪˈvɝs(ə)ɹi//
  • Canada//ˌænəˈvɝs(ə)ɹi//
  • Australia//ˌænɪˈvɜːs(ə)ɹi//

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.

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.

    To some extent all anniversaries derive their significance from testing, from contemplating this observation, especially when it concerns cultures as radically different as those of Aboriginal Australia before first contact (and since), and of Georgian England.

    As we mark the 250th anniversary of the Declaration of Independence, we must seize this moment to build a genuine culture of free expression for all.

  2. 2

    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.

    We are celebrating our tenth anniversary today.

  3. 3

    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).

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

    In a thinly veiled threat to Saddam Hussein, President George Bush marked the six-month anniversary of September 11th by reiterating America's commitment to prevent rogue countries obtaining weapons of mass destruction.

    Jonathon proposed to his [Jess's] mom on their three-month anniversary of meeting and married her on their fourth.

Etymology

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

Forms

plural
anniversaries
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).