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Dictionary definition for the word "u"
u
4 definitions
1: (chiefly British) of or appropriate to the upper classes especially in language use n 2: a nitrogen-containing base found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine [syn: uracil] 3: a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons [syn: uranium, atomic number 92] 4: the 21st letter of the Roman alphabet |
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