Tag Archives: Anniversary

Technical Anniversaries

We’re often asked what is the name or symbol of an anniversary of an event which do tend to vary depending upon the actual event e.g. if we were asked what is the 50th Anniversary we would say ‘Golden’ this is because we specialise in Wedding Anniversaries and 50 years is a Golden Wedding.

If you want a full list of Wedding Anniversaries then try our Wedding Anniversary Traditional List as a starting point.

This however is not always the case as often the events also have other names which this post should hopefully clarify! The technical terms are more often than not derived from the Latin terms for the period.

Anniversary Technical Term to use Other Terms Used
Every Month Monthly Technically these are not anniversaries as less than a year has passed
Every 3 months Quarterly
Twice Yearly (every 6 months) Bi-annual
1 year Annual
2 years Biennial
3 years Triennial
4 years Quadrennial
5 years Quinquennial
6 years Sexennial
7 years Septennial
8 years Octennial
9 years Novennial
10 years Decennial
11 years Undecennial
12 years Duodecennial
13 years Tredecennial
14 years Quattuordecennial
15 years Quindecennial
20 years Vigintennial
25 years Silver Jubilee*
50 years Quinquagenary Golden Jubilee*
60 years Sexagennial Diamond Jubilee*
70 years Septuagennial
75 years Dequascentennial Diamond Jubilee Latin contraction of
de-quadrans which means “a whole unit less a
quarter” (de means
“from”; quadrans
means “quarter”. 75 years is a quarter century less than a whole century
or 75 = (-25 + 100)
100 years Centenary
150 years Sesquicentennial Term broken
down as sesqui- (one and a half) centennial (100 years)
175 years Dequasbicentennial Dodrabicentennial Alternative
Latin form
200 years Bicentennial
250 years Sestercentennial To express 2½
in Latin it would be expressed as “half-three”. The term relates to
being halfway [from the second] to the third integer. In Latin this is
“Sestertius” which is a contraction of semis
(halfway) tertius
(third) – hence Sestercentennial.
300 years Tercentennial Tricentennial
400 years Quadricentennial Quatercentenary
500 years Quincentennial
600 years Sexcentennial
700 years Septcentennial
800 years Octocentennial
900 years Nonacentennial
1000 years Millennial
2000 years Bimillennial

*A ‘Jubilee’ in the western world is a term derived from the Bible and although historically had a different meaning it is used in this context to define a period of years indicated by the preceding word e.g. Silver Jubilee = 25 years, Golden Jubilee = 50 years and Diamond Jubilee = 60 years

Further Info:

Anniversary Names – Wikipedia

Latin to English – Enter the time period to find a translation in Latin