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| Dei·mos [ d mòss ] |
noun |
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| Definition: |
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outermost of Mars's two natural satellites: the outermost of the two natural satellites of Mars, both of which are small. It was discovered in 1877 and there is evidence suggesting that it is a captured asteroid. See also Phobos
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| [After one of the sons of Ares in Greek mythology] |
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