| The New Dictionary of Cultural Literacy, Third Edition. 2002. |
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| Pluto |
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| The Roman name of Hades, the Greek and Roman god of the underworld and ruler of the dead. | 1 |
| The planet Pluto is usually the most distant planet in the solar system. | 2 |
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| | | The New Dictionary of Cultural Literacy, Third Edition. Edited by E.D. Hirsch, Jr., Joseph F. Kett, and James Trefil. Copyright © 2002 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
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