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| atomic bomb |
an extremely destructive weapon, the explosive power of which derives from the immense amount of energy suddenly released when the nuclei of uranium 235 or plutonium atoms are split; atom bomb. |
| fuel rod |
a rod-shaped unit that contains nuclear fuel such as plutonium or uranium. |
| pegmatite |
a coarse, grainy granite that occurs in layers and sometimes contains rare metals such as uranium. |
| pitchblende |
a naturally occurring dark-colored mineral that is a major source of uranium and radium. |
| protactinium |
a very toxic radioactive chemical element of the actinide series that has ninety-one protons in each nucleus and that is a product of the radioactive decay of uranium. (symbol: Pa) |
| samarskite |
a deep black mineral with reddish brown streaks that contains some rare-earth metals and traces of oxides of uranium, thorium, and the like. |
| transuranic |
having an atomic number higher than that of uranium. |
| U |
symbol of the chemical element uranium. |
| yellowcake |
a powdery uranium concentrate used esp. in nuclear reactors that is obtained from the milling of uranium. |
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