[{"Bold_text": "noun", "List Items": ["Classical Mythology.a name given to Hades, under which he is identified by the Romans with Orcus.", "Astronomy.a dwarf planet dwarf planethaving an equatorial diameter of about 2,100 miles (3,300 km), a mean distance from the sun of 3.674 billion miles (5.914 billion km), a period of revolution of 248.53 years, and one known moon, Charon. Based on the definition of a planet by the International Astronomical Union in 2006, Pluto, regarded as the ninth and most distant planet in our solar system since its discovery in 1930, was reclassified as a dwarf planet, a decision that continues to be examined and questioned by some astronomers."]}]