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| alkali metal |
any of a group of highly reactive chemical elements, such as sodium and potassium, that are typically univalent cations forming various compounds, but that can be isolated as soft, low-density metals. |
| biotite |
a mica commonly found in igneous and metamorphic rock, ranging in color from dark green or brown to black, and containing iron, magnesium, potassium, and aluminum. |
| bromide |
potassium bromide, sometimes used as a sedative. [1/4 definitions] |
| caustic potash |
potassium hydroxide. |
| cream of tartar |
a white powdery substance used in baking powder and food preparations, and in tinning metal; potassium bitartrate. |
| cyanide |
a chemical compound that contains one carbon and one nitrogen atom together with another element such as potassium or sodium, both of which form extremely poisonous substances. [1/2 definitions] |
| feldspar |
any of a group of crystalline minerals that form the basic constituents of nearly all crystalline rocks, consisting usu. of silicates of aluminum, potassium, sodium, or calcium. |
| gunpowder |
an explosive used to propel a gun projectile, esp. the explosive made from potassium nitrate, sulfur, and charcoal; black powder. |
| iodine |
a solution of powdered iodine together with sodium iodide or potassium iodide in alcohol, used as an antiseptic; tincture of iodine. [1/2 definitions] |
| iodized salt |
ordinary table salt combined with a small amount of sodium or potassium iodide. |
| K3 |
symbol of the chemical element potassium. |
| lye |
a corrosive substance, esp. potassium or sodium hydroxide, usu. dissolved in water. |
| niter |
a whitish salt, potassium nitrate or sodium nitrate, used in gunpowder or fertilizer; saltpeter. |
| nitrate |
potassium nitrate or sodium nitrate used as fertilizer. [1/3 definitions] |
| pearl ash |
a white powdery substance used to manufacture soap, glass, and the like; potassium carbonate. |
| potash |
potassium carbonate or potassium hydroxide. [2 definitions] |
| potassium-argon dating |
a scientific method for dating geological specimens, based on the natural rate of decay of potassium into argon, and the ratio of the two elements in the specimen. |
| potassium chloride |
a colorless crystalline salt used in fertilizers and in the making of other potassium salts. |
| saleratus |
sodium or potassium bicarbonate used in cooking and baking; baking soda. |
| saltpeter |
a natural form of potassium nitrate that is used in the manufacture of gunpowder. |
| water glass |
sodium or potassium silicate, usu. dissolved in water to form an adhesive, a preservative for eggs, or a protective coating. [1/4 definitions] |
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