a hard, very heavy, dark-colored, radioactive mineral, UO, the chief ore of uranium; uranium oxide
Origin of uraninite; from uranium + -in + -ite
A complex brownish-black mineral, UO2, forming the chief ore of uranium and containing variable amounts of radium, lead, thorium, and other elements. It is isomorphous with thorianite.
Origin of uraniniteGerman Uranin (from New Latin &umacron;ranium, uranium; see uranium) + –ite1.
uran- +"Ž -ine +"Ž -ite