Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun water_softener

1 sense of water softener

Sense 1
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)
       => softener -- (a substance added to another to make it less hard)