Definition of Umbriel in English:

Umbriel

Line breaks: Um|briel
Pronunciation: /ˈʌmbrɪəl
 
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Astronomy
  • A satellite of Uranus, the thirteenth closest to the planet, discovered in 1851 (diameter 1,190 km).

Origin

named after a sprite in The Rape of the Lock by Alexander Pope.

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Word of the day astrogation
Pronunciation: ˌastrəˈgāSHən
noun
(in science fiction) navigation in outer space