Get the FREE one-click dictionary software for Windows
or the iPhone/iPad and Android apps
Noun: hard water  haa(r)d wo-tu(r)
  1. Water that contains mineral salts (as calcium and magnesium ions) that limit the formation of lather with soap
    "The plumber recommended installing a water softener to deal with the hard water"

Type of: H2O, water

Antonym: soft water

Encyclopedia: Hard water