Hello, I'm an expert in the field of anniversaries and their associated terms. In English, there are specific names for various milestones that mark the passage of time, especially in the context of significant events or reigns. These terms often include a Latin-derived numerical prefix that indicates the number of years, followed by a word that describes the nature of the anniversary. Let's delve into the question at hand: Which Jubilee is 25 years?
The term for a 25-year anniversary is Quadranscentennial, but it is more commonly referred to as the Silver Jubilee. The word "jubilee" itself is derived from the Hebrew "yobel," which was a name for the biblical Jubilee year, a year of rest and release that occurred every 50 years. However, in modern usage, "jubilee" has come to denote any significant anniversary, with specific terms attached to particular milestones.
The Silver Jubilee is a significant milestone that is often celebrated with great fanfare. The association of silver with the 25th year is due to the metal's value and the fact that it is less rare and expensive than gold, which is reserved for the 50th anniversary, known as the Golden Jubilee. The Silver Jubilee is a time for reflection on the past 25 years and is often marked with special events, commemorations, and sometimes even gifts of silver.
Here are some other notable anniversaries and their terms:
- 40 years: Quadragennial or Ruby Jubilee
- 50 years: Semicentennial or Quinquagenary, also known as the Golden Jubilee
- 60 years: Sexagennial or Sexagenary, also known as the Diamond Jubilee

Each of these terms carries its own significance and is marked with its own set of traditions and celebrations. Anniversaries are important because they provide an opportunity to look back on the achievements and progress made over a specific period. They also serve as a reminder of the enduring nature of relationships, institutions, or reigns that have stood the test of time.
In conclusion, the 25-year anniversary is known as the Silver Jubilee, a term that reflects the value and significance of this milestone. It is a time for celebration, reflection, and looking forward to the next 25 years and beyond.

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Latin-derived numerical namesAnniversaryPreferred termOther terms25 yearsQuadranscentennialSilver jubilee40 yearsQuadragennialRuby jubilee50 yearsSemicentennial / QuinquagenaryGolden jubilee60 yearsSexagennial / SexagenaryDiamond jubilee47 more rowsread more >>