100-yr. span

• The 2000s, e.g.: Abbr
• Eon component: abbr
• MCMI to MM, e.g.
• Decimal meas
• Hundred yrs
• Noted arcade classic, and this puzzle's theme
• Hundred yrs.
• About 877,000 hrs.
• Time span: Abbr.

Wikipedia Word definitions in Wikipedia
Cen or CEN may refer to: Cen (rune) (ᚳ), a rune of the Anglo-Saxon fuþorc Cen (surname) (岑), a Chinese surname Cen, or sen, is the currency of the fictional nation of Amestris of the anime/manga Fullmetal Alchemist