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centennial

 - 3 dictionary results

cen⋅ten⋅ni⋅al

[sen-ten-ee-uhl]
–adjective
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.
–noun
5. a 100th anniversary or its celebration; centenary.

Origin:
1790–1800; < L cent- 100 (see cent ) + E -ennial pertaining to a period of years (extracted from biennial )


cen⋅ten⋅ni⋅al⋅ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To centennial
cen·ten·ni·al   (sěn-těn'ē-əl)   
adj.  
  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.

n.  A 100th anniversary or a celebration of it.

[Latin centum, hundred; see dek in Indo-European roots + (bi)ennial.]
cen·ten'ni·al·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

centennial 
c.1797, formed in Eng. from L. cent(um) "hundred" + Eng. (bi)ennial. Originally an adj., first used as a noun in 1876.
Online Etymology Dictionary, © 2001 Douglas Harper
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