| The New Dictionary of Cultural Literacy, Third Edition. 2002. |
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| hard water |
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| Water in which dissolved minerals make it difficult to produce a lather with soap. | 1 |
| ‡ Hard water is usually associated with well water in regions where the rocks contain a large proportion of iron-bearing minerals. | 2 |
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| | | The New Dictionary of Cultural Literacy, Third Edition. Edited by E.D. Hirsch, Jr., Joseph F. Kett, and James Trefil. Copyright © 2002 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
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