火卫二 Traditional form: 火衛二 Pinyin (reading): Huǒwèi Er Definitions: Deimos (moon of Mars), aka Mars II Characters: 火 - fire, flame; to burn; anger, rage 卫 - to guard, to protect, to defend 二 - two; twice Traditional characters: 火 - fire, flame; to burn; anger, rage 衛 - to guard, to protect, to defend 二 - two; twice