noun
- A naturally occurring mineral salt containing potassium chloride and other salts, used as a fertilizer and source of potassium compounds.
Usage: technical; usually used in plural or as a mass noun
Examples
- Kainits is mined in several countries and processed for agricultural use.
- The fertilizer industry relies on kainits as a source of potassium.
- Deposits of kainits are found in ancient salt beds.
- Farmers apply kainits to improve soil nutrient content.