| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| archosaur |
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| SYLLABICATION: | ar·cho·saur |
| PRONUNCIATION: |  är k -sôr |
| NOUN: | A reptile of the subclass Archosauria, which includes the dinosaurs, pterosaurs, and the modern crocodilians. | | ETYMOLOGY: | New Latin Archosauria, subclass name : Greek arkhos, ruler + Greek sauros, lizard.
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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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