| NOUN | substance | water softener | a substance (such as sodium chloride) that lessens the hardness of water by replacing calcium and magnesium ions with sodium ions and so gives the water more efficient sudsing power |
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| Meaning | A substance (such as sodium chloride) that lessens the hardness of water by replacing calcium and magnesium ions with sodium ions and so gives the water more efficient sudsing power. | |
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| Narrower | zeolite | Any of a family of glassy minerals analogous to feldspar containing hydrated aluminum silicates of calcium or sodium or potassium |
| Broader | softener | A substance added to another to make it less hard |
| Spanish | descalcificador, suavizador de agua | |
| Catalan | descalcificador, desenduridor | |
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