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I was looking for a word that means "25 years" in the way that "bicentennial" refers to 200 years.

Wikipedia suggests "Quadranscentennial", but I can't find extensive use of that.

http://en.wikipedia.org/wiki/Anniversary

Is there any word for what I'm looking for?

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Quarter of a century? That's the most common –  Bidella Feb 29 '12 at 0:14

5 Answers 5

As you pointed out, quadranscentennial is the technical term and it is not widely used. I have seen either:

  • 25th Anniversary or
  • Every 25 years

Depending on whether you're talking about a one-time event (like a wedding anniversary) or a repeating event (none come to mind).

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In this case, its my 25th birthday, and I'd like a nice word to describe the achievement of having survived for a quarter century. :) –  Yahel Feb 29 '12 at 2:16
    
In that case I would go with Silver Birthday, as others have said. I don't think a cooler name exists. –  Lynn Feb 29 '12 at 6:08

A 25th anniversary is a silver jubilee or silver anniversary, and a celebration of that milestone would be a Silver Jubilee.

The corresponding 50th anniversary is a golden jubilee, after which usage varies; when celebrating personal achievements it is a diamond jubilee at 60 and platinum at 70, as in the reign of a monarch, but the 75th anniversary of the founding of the Boy Scouts of America, for example, was a diamond jubilee.

If you want to mark a period of time rather than the milestone, then quarter century would do the trick as well as simply saying 25th anniversary or 25 years.

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You didn't answer the asked question, which is to find a word of the same form as bicentennial. –  jwpat7 Feb 29 '12 at 1:01
    
Right, I'm familiar with the those terms. But I'm looking for a word like bicentennial. –  Yahel Feb 29 '12 at 2:15
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The stated question was "a word that means '25 years' in the way that 'bicentennial' refers to 200 years." I provided a phrase, but a phrase that means 25 years and which I use in the exact scenarios I use "bicentennial." If that's not sufficient, the OP needs to revise the question and be more specific. –  choster Feb 29 '12 at 20:40

Note the comments entry for quadranscentennial as a term for 25th anniversary in that Wikipedia link:

Probably a modern coined term

Probably correct, in my opinion.

There are a few usages of quadranscentennial as a 25th anniversary event e.g. the Bhutan Quadranscentennial of Apollo 11 commemorative stamp issued in 1994. But I am uncertain if that was a transcription or spelling error, as I could not find any confirmation from an official Bhutan website.

For wedding commemoration, or regency, a term in current use is "Silver Anniversary". Or "Silver Jubilee" in the case of regents. It isn't a Latin-ate term. But it is a commonly understood term.

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The term "quadrans" (like "quadrant") means a fourth or a quarter (it was the name of a Roman coin), so a quadranscentennial is a fourth of a centennial — i.e., 25 years.

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Did you notice all the other answers with the same suggestion? –  Mitch Apr 4 '13 at 22:32

A period of 25 years is a "Generation". The time from birth to someone having a child of their own and starting the next generation.

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