1) Cellulose nitrate 2) Guncotton 3) Nitrocellulose 4) Nitrocotton 
(from the article `explosive`) ...It was first marketed about 1909 and was the most important type of smokeless powder used by the Allies in World War I. It was made from a ...
[n] - nitrocellulose containing less nitrogen than guncotton
noun nitrocellulose containing less nitrogen than guncotton; used in making smokeless powder