potassium
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- n a light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite
- By potash people mean potassium, a, metal absolutely essential to plant life.
- Then, exhorted by their leader, intimidated by armed guards and lulled with sedatives and painkillers, parents and nurses used syringes to squirt a concoction of potassium .
- Potassium, a body salt that affects the electrical conductivity of the heart, is essential to controlling cardiac rhythm.