Saltpetre
/ˌsɔːltˈpiːtər/
Definition 1 of 1
Pro Tip 1/3Historical Use
Originally, saltpetre was important for making gunpowder, contributing to its historical significance. 
Museums display saltpetre as part of ancient gunpowder recipes.
Pro Tip 2/3Safety Caution
Saltpetre can be hazardous; proper handling is crucial, especially when used in making fireworks. 
Always wear protective gear when handling saltpetre for pyrotechnics.
Pro Tip 3/3Food Usage
In food, saltpetre works as a preservative, but its use has declined due to modern alternatives. 
Saltpetre was once common in curing meats.