centenary

[sen-ten-uh-ree, sen-tn-er-ee; especially British sen-tee-nuh-ree] /sɛnˈtɛn ə ri, ˈsɛn tnˌɛr i; especially British sɛnˈti nə ri/
adjective
1.
of or pertaining to a period of 100 years.
2.
recurring once in every 100 years:
a centenary celebration.
noun, plural centenaries.
3.
a centennial.
4.
a period of 100 years; century.
Origin
1600-10; < Latin centēnārius (adj.), equivalent to centēn(ī) a hundred each (cent(um) 100 + -ēnī distributive suffix) + -ārius -ary
Can be confused
centenary, centennial.
Examples from the web for centenary
  • Prospero marks the centenary of a designer of typefaces.
British Dictionary definitions for centenary

centenary

/sɛnˈtiːnərɪ/
adjective
1.
of or relating to a period of 100 years
2.
occurring once every 100 years
noun (pl) -naries
3.
a 100th anniversary or its celebration
Word Origin
C17: from Latin centēnārius of a hundred, from centēnī a hundred each, from centum hundred
Word Origin and History for centenary
adj.

c.1600, "period of 100 years," from Latin centenarius "of a hundred, relating to a hundred," from centenai "a hundred each," from centum "hundred" (see hundred). As a noun, "100th anniversary," from 1788.