from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Water with a high concentration of dissolved minerals, especially calcium, making it difficult to lather with soap.

from the GNU version of the Collaborative International Dictionary of English

  • adj. water, which contains lime or some mineral substance rendering it unfit for washing. See Hardness, 3.
  • n. See under Hard.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. water that contains mineral salts (as calcium and magnesium ions) that limit the formation of lather with soap


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