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Anniversary Names

Anniversaries are often given names to represent their numbers. Some are very common. Some are quite a mouthful. Here are some of the more commonly accepted names.

Year Anniversary Name
2nd Biennial
3rd Triennial
4th Quadrennial
5th Quinquennial
6th Hexennial
7th Septennial
8th Octennial
9th Novennial
10th Decennial
11th Hendecennial
12th Duodecennial
13th Tredecennial
15th Quindecennial
16th Sextodecennial
17th Septendecennial
20th Vigintennial
30th Trigentennial
40th Quadragennial
50th Quinquagenary or Jubilee
60th Sexagennial
70th Septuagennial
75th Septuagesiquintennial
80th Octogintennial
90th Nonagintennial
100th Centennial
125th Quasquicentennial
150th Sesquicentennial
175th Septaquintaquinquecentennial
200th Bicentennial
225th Quasquibicentennial
250th Semiquincentennial
300th Tercentennial
350th Semiseptcentennial
400th Quatercentenary
500th Quincentennial
600th Sexcentennial
700th Septcentennial
800th Octocentennial
1,000th Millenial
15,000th Quindecimillenial