The description of the word you requested from the astronomical dictionary is given below.
A moon of 11 km diameter at about 14,345,000 km from the planet Uranus. The gravity at its surface is about 0.0002 times as strong as on Earth. The moon goes once around its planet in about 4.5 years. The moon was discovered in 2003. Also called UXXIII (Uranus twenty-three). Its provisional designation was S/2003 U3.