Definition of centennialize in English:

centennialize

(also centennialise)

verb

US
rare
  • with object To mark the centenary of; = centenarize. Formerly also without object: †to celebrate a centenary (obsolete).

Origin

Late 19th century. From centennial + -ize.

Pronunciation

centennialize

/sɛnˈtɛnɪəlʌɪz//s(ə)nˈtɛnɪəlʌɪz/