Where does “doupion” come from?

doupion (French) comes from Italian doppione, from Italian doppio, from Latin dūplus, from Proto-Italic *duplos — double.

Ancestry of “doupion”, step by step

StepLanguageWordMeaning
1Italiandoppioneduplicate
2Italiandoppiodouble, dual, two; two-faced, double-dealing;...
3Latindūplusdouble (twice as much, or as big)
4Proto-Italic*duplosdouble

Words derived from “doupion”

Every word from Proto-Italic *duplos →Every word from Latin dūplus →Every word from Italian doppio →