water softener
English Thesaurus
1. 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 (noun.substance)
| hypernym | : | softener, |
| definition | : | a substance added to another to make it less hard (noun.substance) |
| hyponym | : | zeolite, |
| definition | : | any of a family of glassy minerals analogous to feldspar containing hydrated aluminum silicates of calcium or sodium or potassium; formed in cavities in lava flows and in plutonic rocks (noun.substance) |
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