centillion /sen-tilˈyən/

1. In UK and Germany, the hundredth power of a million, ie 1 followed by 600 zeros
2. In N America and France, the hundred-and-first power of a thousand, ie 1 followed by 303 zeros

• felons
• felony
• felsic
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• felsitic
• felspar
• felspars
• felspathic
• felspathoid
• felspathoids
• felstone
• felstones
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• feltiest
• felting
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• felt pen
• felt pens