Definition of Uranus in US English:


proper noun

  • 1Greek Mythology
    A personification of heaven or the sky, the most ancient of the Greek gods and first ruler of the universe. He was overthrown and castrated by his son Cronus.

  • 2Astronomy
    A distant planet of the solar system, seventh in order from the sun, discovered by William Herschel in 1781.

    Uranus orbits between Jupiter and Neptune at an average distance of 1,785 million miles (2,872 million km) from the sun. It has an equatorial diameter of 31,763 miles (51,118 km) and is one of the gas giants. The planet is bluish-green in color, having an upper atmosphere consisting almost entirely of hydrogen and helium. There are at least seventeen satellites, the largest of which are Oberon and Titania, and a faint ring system