Tb, n.
a unit of information equal to 1000 gigabits or 10^12 (1,000,000,000,000) bits
<noun.quantity>
Tb Tbit terabit
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a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite
<noun.substance>
Tb atomic number 65 terbium
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