[sen-ten-ee-uh l]
See more synonyms for centennial on Thesaurus.com
  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.
  1. a 100th anniversary or its celebration; centenary.

Origin of centennial

1790–1800; < Latin cent- 100 (see cent) + English -ennial pertaining to a period of years (extracted from biennial)
Related formscen·ten·ni·al·ly, adverbpre·cen·ten·ni·al, adjective
Can be confusedcentenary centennial
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for centennial

Contemporary Examples of centennial

Historical Examples of centennial

  • It is well for us that the Lincoln centennial comes to say this to us persuasively and commandingly.

  • I was there once, in the Centennial, and it was so full everywheres.


    Anna Balmer Myers

  • It is June of the Centennial year, and all the land is ablaze with patriotic fervor.

    Marion's Faith.

    Charles King

  • At least you would have wondered a decade ago in the Centennial year.

    Marion's Faith.

    Charles King

  • Her hymn for the Bolivar centennial has become the national song of Venezuela.

British Dictionary definitions for centennial


  1. relating to, lasting for, or completing a period of 100 years
  2. occurring every 100 years
  1. mainly US and Canadian another name for centenary
Derived Formscentennially, adverb

Word Origin for centennial

C18: from Latin centum hundred, on the model of biennial
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for centennial

1789, from Latin centum "one hundred" (see hundred) + ending from biennial. As a noun, "hundredth anniversary celebration," from 1876; the older noun is centenary.

Online Etymology Dictionary, © 2010 Douglas Harper