Definition of centenarize in English:
centenarize
(also centenarise)
verb sɛnˈtɛnərʌɪzsɛnˈtiːnərʌɪz
with object To celebrate the centenary of; to honour or mark (an occasion, event, etc.) with a centenary celebration.
Origin
Late 19th century; earliest use found in Dark Blue. From centenary + -ize.