uranium dioxide: Meaning and Definition of

ura'nium diox'ide

Pronunciation: [key]
— Chem. Chem.
  1. a black, crystalline compound, UO, insoluble in water, used in nuclear fuel rods, in ceramics, and pigments. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.