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Noun t.b. has 2 senses
- terbium, Tb, atomic number 65 - a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite
--1 is a kind of infectious disease; metallic element, metal
--1 is a substance of apatite; monazite; gadolinite, ytterbite
--1 has particulars:
- terabyte, T, TB - a unit of information equal to a trillion (1,099,511,627,776) bytes or 1024 gigabytes
--3 is a kind of computer memory unit
--3 has parts: gigabyte, G, GB
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