1.(Greek mythology) god of the heavens; son and husband of Gaea and father of the Titans in ancient mythology • Syn: Ouranos • Topics: Greek mythology • Instance Hypernyms: Greek deity 2. a giant planet with a ring of ice particles; the 7th planet from the sun has a blue-green color and many satellites - Uranus was discovered by William Herschel in 1781 • Instance Hypernyms: Jovian planet, gas giant, superior planet, outer planet • Member Holonyms: solar system