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The symbol for the element lutetium.
The symbol for lutetium.
A silvery-white metallic element of the lanthanide series that is used in nuclear technology. Its radioactive isotope is used in determining the age of meteorites. Atomic number 71; atomic weight 174.97; melting point 1,663°C; boiling point 3,395°C; specific gravity 9.840 (at 25°C); valence 3. See Periodic Table.
The country code for Luxembourg.
((Chinese lu: "law"), ancient Chinese musical instruments constructed for tuning purposes. To establish pitches, 12 bamboo pipes, closed at one end, were cut into graduated lengths. When blown across their open ends, they produced the 12 lu, or fundamental pitches, of the octave. These pipes should not be confused with the panpipe, or paixiao.