pyroxylin
/pʌɪˈrɒksɪlɪn
/noun [mass noun] Chemistry
A form of nitrocellulose which is less highly nitrated and is soluble in ether and alcohol.The process of pyroxylin gunpowder production is a complex multiphase chemical engineering process.
Origin
Mid 19th century: from French pyroxyline, from Greek pur 'fire' + xulon 'wood'.