a hard, very heavy, dark-colored, radioactive mineral, UO, the chief ore of uranium; uranium oxide
Origin of uraninitefrom 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 ūranium uranium ; see uranium . ) -ite 1
uran- +"Ž -ine +"Ž -ite