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18.116.40.151

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1 definition found

From: WordNet (r) 2.0

 u
      adj : (chiefly British) of or appropriate to the upper classes
            especially in language use
      n 1: a nitrogen-containing base found in RNA (but not in DNA) and
           derived from pyrimidine; pairs with adenine [syn: uracil]
      2: a heavy toxic silvery-white radioactive metallic element;
         occurs in many isotopes; used for nuclear fuels and
         nuclear weapons [syn: uranium, atomic number 92]
      3: the 21st letter of the Roman alphabet