1. Iapetus - Noun
2. Iapetus - Proper noun
(Greek mythology) the Titan who was father of Atlas and Epimetheus and Prometheus in ancient mythology
Source: WordNetThey succeed with the help of the Titan Iapetus and the Giant Damasen, but both sacrifice themselves to save them from Tartarus himself. Source: Internet
In the beginning of the Late Ordovician, from 460 to 450 Ma, volcanoes along the margin of the Iapetus Ocean spewed massive amounts of carbon dioxide into the atmosphere, turning the planet into a hothouse. Source: Internet
The most significant narratives of his origin appear in the Theogony of Hesiod which relates Prometheus as being the son of the Titan Iapetus by Clymene, one of the Oceanids. Source: Internet