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| English | French |
| potassium cyanide | cyanure de potassium |
| potassium cyanide | KCN |
| potassium fertiliser A chemical fertilizer containing potassium. Potassium (K) is required by all plant and animal life. Plants require potassium for photosynthesis, osmotic regulation and the activation of enzyme systems | engrais potassique |
| potassium fertilizer | engrais potassique |
| potassium persulphate | K2S2O8 |