/ Dictionary / Index I Iapetus: Meaning and Definition of Find definitions for: I•ap•e•tus Pronunciation: (ī-ap'i-tus, ē-ap'-), [key] — n. a Titan, son of Uranus and Gaea. a natural satellite of the planet Saturn. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: iapetus (Thesaurus) -iana Iapigia Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language