pyroxylin
noun
py·rox·y·lin pī-ˈräk-sə-lən 
pə-
1
: a flammable mixture of nitrocelluloses used especially in making plastics and water-repellent coatings (such as lacquers)
2
: a pyroxylin product
Word History
Etymology
International Scientific Vocabulary pyr- + Greek xylon wood
First Known Use
circa 1847, in the meaning defined at sense 1
Medical Definition
pyroxylin
noun
py·rox·y·lin pī-ˈräk-sə-lən, pə-
: a flammable mixture of cellulose nitrates usually with less than 12.5 percent nitrogen that is less explosive than guncotton, soluble in a mixture of ether and alcohol or other organic solvents, and used especially in making plastics and coatings (as lacquers) see collodion