centennial

[ sen-ten-ee-uh l ]
/ sɛnˈtɛn i əl /

adjective

pertaining to, or marking the completion of, a period of 100 years.
pertaining to a 100th anniversary.
lasting 100 years.
100 years old.

noun

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)

OTHER WORDS FROM centennial

cen·ten·ni·al·ly, adverbpre·cen·ten·ni·al, adjective

WORDS THAT MAY BE CONFUSED WITH centennial

centenary centennial
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for centennial

British Dictionary definitions for centennial

centennial
/ (sɛnˈtɛnɪəl) /

adjective

relating to, lasting for, or completing a period of 100 years
occurring every 100 years

noun

mainly US and Canadian another name for centenary

Derived forms of centennial

centennially, 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