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词汇 potassium
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potassium n.

metallic element, 1807, coined by English chemist Sir Humphry Davy from Modern Latin potassa, Latinized form of potash (q.v.). Davy first isolated it from potash. The chemical symbol K is from Latin kalium "potash," from Arabic al-qaliy "the ashes, burnt ashes" (see alkali). Related: Potassic.

updated on September 23, 2020

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