An arrangement for removing from a natural water the salts of calcium and magnesium so as to fit it for use in steam-boilers without producing scale.(noun)
The Century Dictionary (Public Domain)
Use "water-softener" in a sentence
"If you have hard water, you might consider installing a water softener; a local water-softener dealer might even do a free analysis of your water."
"Other franchising chains recently adopting arbitration include Coverall Cleaning Concepts and Culligan International Inc., the water-softener treatment company."
"Thank you. water-softener. 3000mb.com water softener"