Definition of Iapetus in English:

Iapetus

proper noun

Astronomy
  • A satellite of Saturn, the seventeenth closest to the planet, having one bright icy side and one very dark side, discovered by Cassini in 1671 (diameter 1,440 km).

Origin

Named after a Titan of Greek mythology, son of Uranus (Heaven) and Gaia (Earth).

Pronunciation:

Iapetus

/ʌɪˈapɪtəs/