Where does “octillion” come from?

octillion (English) comes from French -illion, from French million, from Middle French million, from Old French millon, from Italian milione, from Italian mille, from Latin Mīlle, from Proto-Italic smīɣeslī.

octillion (English): A thousand trillion trillion, a billion billion...

Definitions

  1. A thousand trillion trillion, a billion billion...

Ancestry of “octillion”, step by step

StepLanguageWordMeaning
1French-illionillion
2Frenchmillionmillion, 10
3Middle Frenchmillionmillion, 10
4Old Frenchmillon—
5Italianmilionemillion
6Italianmillethousand
7LatinMīllethousand; 1000
8Proto-Italicsmīɣeslīthousand
9Proto-Indo-Europeansmih₂ǵʰéslih₂—

Words derived from “octillion”

Every word from Proto-Indo-European smih₂ǵʰéslih₂ →Every word from Proto-Italic smīɣeslī →Every word from Latin Mīlle →