| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| allantoin |
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| SYLLABICATION: | al·lan·to·in |
| PRONUNCIATION: |   -l n t - n |
| NOUN: | A white, crystalline oxidation product, C4H6N4O3, of uric acid that is the metabolic end product of vertebrate purine oxidation and is used medicinally to promote tissue growth. | | ETYMOLOGY: | allanto(is) + –in.
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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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