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American Dictionary of the English Language

Webster's Dictionary 1828

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Potassium


POTAS'SIUM, noun A name given to the metallic basis of vegetable alkali. According to Dr. Davy, 100 parts of potash consist of 86.1 parts of the basis, and 13.9 of oxygen.

Potassium has the most powerful affinity for oxygen of all substances known; it takes it from every other compound, and hence is a most important agent in chimical analysis.