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uranium

DEFINITIONS OF: uranium

1

n a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons

Synonyms:
U, atomic number 92
Types:
uranium 235
a uranium isotope with mass number 235; capable of sustaining chain reactions
uranium 238
the commonest isotope of uranium; it is not fissionable but when irradiated with neutrons it produces fissionable plutonium 239
Type of:
metal, metallic element
any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
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