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hard water

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noun
water that contains magnesium, calcium, or iron salts and therefore forms a soap lather with difficulty.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use hard water in a sentence

Cultural definitions for hard water

hard water

Water in which dissolved minerals make it difficult to produce a lather with soap.

notes for hard water

Hard water is usually associated with well water in regions where the rocks contain a large proportion of iron-bearing minerals.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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