Fortisan

noun

For·​ti·​san

ˈfȯ(r)təˌsan,

-ˌzan

1

: a strong filament yarn made from regenerated cellulose

2

: a lightweight fabric made from Fortisan yarn and used for parachutes, clothing, curtains, bandages, and various industrial purposes

Word History

Etymology

formerly a U.S. registered trademark

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