Where does “millionth” come from?

Million comes from Italian milione, formed from Italian mille (thousand) plus the augmentative suffix -one, ultimately from Latin mille meaning thousand.

millionth (English): The ordinal form of the number one million; The...

Definitions

  1. The ordinal form of the number one million; The...

Ancestry of “millionth”, step by step

StepLanguageWordMeaning
1EnglishmillionThe cardinal number 1,000,000: 10; a thousand...
2Middle EnglishmiliounThe cardinal number 1 000 000: 106; a thousand thousand
3Middle Frenchmillionmillion, 10
4Old Frenchmillon
5Italianmilionemillion
6Italianmillethousand
7LatinMīllethousand; 1000
8Proto-Italicsmīɣeslīthousand
9Proto-Indo-Europeansmih₂ǵʰéslih₂
Every word from Proto-Indo-European smih₂ǵʰéslih₂
millionth — Etymology, Origin & Word History | Etymology Explorer