Italian word milione comes from Italian mille ((cardinal) thousand Thousand.), Italian -one

Detailed word origin of milione

Dictionary entry	Language	Definition
mille	Italian (ita)	(cardinal) thousand Thousand.
-one	Italian (ita)	An augmentative suffix, used to indicate largeness or importance. (organic chemistry) ketone. (physics) -on (particle).
milione	Italian (ita)	Million.

Words with the same origin as milione