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1. Of or relating to an age or period of 100 years.
2. Occurring once every 100 years: a centennial commemoration.
3. Of or relating to a 100th anniversary.
A 100th anniversary or a celebration of it.

[Latin centum, hundred; see dekm̥ in Indo-European roots + (bi)ennial.]

cen·ten′ni·al·ly adv.


1. relating to, lasting for, or completing a period of 100 years
2. occurring every 100 years
chiefly US and Canadian another name for centenary
[C18: from Latin centum hundred, on the model of biennial]
cenˈtennially adv


(sɛnˈtɛn i əl)

1. pertaining to or marking the completion of a period of 100 years.
2. pertaining to a 100th anniversary.
3. lasting 100 years.
4. 100 years old.
5. a 100th anniversary or its celebration.
[1790–1800; < Latin cent- hundred (see cent) + E -ennial, extracted from biennial]
cen•ten′ni•al•ly, adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.centennial - the 100th anniversary (or the celebration of it)centennial - the 100th anniversary (or the celebration of it)
anniversary, day of remembrance - the date on which an event occurred in some previous year (or the celebration of it)
Adj.1.centennial - of or relating to or completing a period of 100 years; "centennial celebration"


A. ADJcentenario
B. N (US) = centenary


[sɛnˈtɛniəl] (mainly US; also British)
n (= centenary) → centenaire m
modif [celebration] → du centenaire


adjhundertjährig, hundertjährlich
n (esp US) → Hundertjahrfeier f, → Zentenarfeier f (geh)


2. n (Am) = centenary
References in classic literature ?
As though the very stars in their courses were working for this young wizard with the talking wire, the Centennial Exposition in Philadelphia opened its doors exactly two months after the telephone had learned to talk.
The great centennial oaks of the forest which encircled the dwelling made the place an absolute solitude.
It was because of this that the celebration of the Second Centennial of American Liberty was deferred.

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