Collodion Definition: Collodion is a flammable, syrupy solution of pyroxylin (aka "nitrocellulose", "cellulose nitrate", "flash paper", and "gun cotton") in ether and alcohol.. Wikipedia suggests Collodion . Collodion contains 9 letters and has 430 connections / rhymes. 137 Dion Dionysus Definition: Dionysus ( ; , Dionysos) was the god of the