Million
late Middle English: from Old French, probably from Italian milione, from mille ‘thousand’ + the augmentative suffix -one .
wiktionary
From Old French, from Italian milione(“million”), from mille(“thousand”) (from Latin mille) + the augmentative suffix -one. ·illion is a base extracted from million, as million is morphologically simple, the variant of ·illion when there is no prefix.
etymonline
million (n.)
"ten hundred thousand, a thousand thousands," late 14c., milioun, from Old French million (late 13c.), from Italian millione (now milione), literally "a great thousand," augmentative of mille "thousand," from Latin mille, which is of uncertain origin. From the start often used indefinitely for "a very great number or quantity."
In the West it was used mainly by mathematicians until 16c., but India, with its love of large numbers, had names before 3c. for numbers well beyond a billion. The ancient Greeks had no name for a number greater than ten thousand, the Romans for none higher than a hundred thousand. "A million" in Latin would have been decies centena milia, literally "ten hundred thousand." Million to one as a type of "long odds" is attested from 1761. Related: Millions.
