9 letters · 14 points in Scrabble
noun the 100th anniversary (or the celebration of it)
adjective of or relating to or completing a period of 100 years
originFrom Latin centēnārius (“containing 100; local official overseeing a hundred”) either directly or via French centenaire, from centēnī (“100 each”) + -ārius (“-ary”), from centum (“hundred”). Doublet of centner, kantar, and quintal.
Etymology from Wiktionary, CC BY-SA 3.0