| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| marlstone |
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| SYLLABICATION: | marl·stone |
| PRONUNCIATION: | märl st n |
| NOUN: | A rock containing clay materials and calcium and magnesium carbonates, with approximately the same composition as marl.
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| The American Heritage® Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved. |
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