Iapetus
//aɪˈæpɪtəs// name
name ·Rare ·Advanced level
Definitions
Proper Noun
- 1 A Titan, the son of Uranus and Gaia, and father of Atlas, Prometheus, Epimetheus, and Menoetius. Greek
- 2 A moon in Saturnian system, Solar System: The third largest moon of Saturn
- 3 A former ocean between former continent of Laurentia (North America) and former continent of Baltica (Europe): An ancient ocean which existed between 600 and 400 million years ago.
"So, in the early Ordovician, Iapetus was wide enough to have one side in high latitudes and the other in the tropics: a massive ocean, indeed."
- 4 Alternative form of Japheth. alt-of, alternative, obsolete
Example
More examples"Giovanni Cassini (1625-1712) was the first to observe four of Saturn’s moons, including Iapetus."
Etymology
From Latin Iapetus, from Ancient Greek Ἰαπετός (Iapetós), possibly from Pre-Greek. * (moon): Named after the titan. * (ocean): The Iapetus Ocean was the predecessor to the Atlantic Ocean, so this name was chosen because Iapetus is the father of Atlas (see Atlantic).
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.