MimasPronunciation: /ˈmʌɪmas, -məs/ AstronomyDefinition of Mimas a satellite of Saturn, the seventh closest to the planet, which has a crater a third of its whole diameter. It was discovered by William Herschel in 1789 (diameter 390 km). Origin:named after a giant in Greek mythologyMimas in other Oxford dictionaries Definition of Mimas in the US English dictionary
