papyroxylinEtymologyFrom papyro- (“papyrus, paper”) + xylo- (“wood, wood pulp”) + -in (“forming substances made from living things”), after the model of earlier pyroxylin.papyroxylin means synonym of gun-paper. Lexicurio rates it Sui generis — a strength score of 100 out of 100.nounSynonym of gun-paper.“Gun-paper, or papyroxyline, is paper which has been immersed for a few seconds in a mixture of nitric and sulphuric acids, and then washed in an abundance of water.”