| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Black gunpowder | Mining | A mixture of potassium nitrate (saltpeter), sulfur, and charcoal in varying proportions. A typical composition is 70% to 75% saltpeter, 10% to 14% sulfur, and 14% to 16% charcoal. It is designated according to grain size: mealed; superfine grain (FFG); fine grain (FG); large or coarse grain (LG); large grain for rifles (RLG); and mammoth. Syn: black powder. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
