| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| Usumacinta |
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| SYLLABICATION: | U·su·ma·cin·ta |
| PRONUNCIATION: |  s -m -s n t , -s -mä-s n tä |
| A river, about 965 km (600 mi) long, of southeast Mexico. It forms part of the Guatemala-Mexico border.
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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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