noun
Chile saltpeter; soda nitre
A mineral form of sodium nitrate found chiefly in Chile, used in fertilizers and explosives.
チリ硝石は天然の硝酸ナトリウムの鉱物です。
Chile saltpeter is a natural mineral of sodium nitrate.
Compound of チリ (Chile) and 硝石 (saltpeter), referring to the mineral's primary source.