uraniumn. 鈾鈾U學術名詞鈾:化學元素、地球科學、電機工程、礦冶工程、材料科學、金屬材料U:電力工程鈾華:礦物學自然鈾:礦物學英文釋義a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons