potassium

Where does the word "potassium" come from? It comes from Dutch potaschen, passing through English before entering English (1807).

Potassium’s story begins in Dutch: potaschen meant “pot ashes.” Pot ashes, describing the substance leached from wood ash in pots. By 1600s, the word had taken hold in English as potash. Settled as the English word for the ash-derived alkaline substance. It reached English by 1807 as potassium. Coined by Humphry Davy with a New Latin -ium ending after isolating the element from potash. Today, potassium means a soft, silvery-white metallic chemical element essential to living cells.

1. Stage 1 · Dutch · medieval potaschen "pot ashes", pot ashes, describing the substance leached from wood ash in pots.
2. Stage 2 · English · 1600s potash "an alkaline substance derived from wood ash", settled as the English word for the ash-derived alkaline substance.
3. Stage 3 · English · 1807 potassium "the metallic element isolated from potash", coined by Humphry Davy with a New Latin -ium ending after isolating the element from potash.