Definitions for pb
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Random House Webster's College Dictionary
Pb
Chem. Symbol.lead.
Origin of Pb:
< L plumbum
Princeton's WordNet
lead, Pb, atomic number 82(noun)
a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey
"the children were playing with lead soldiers"
petabit, Pbit, Pb(noun)
a unit of information equal to 1000 terabits or 10^15 bits
petabyte, PB(noun)
a unit of information equal to 1000 terabytes or 10^15 bytes
petabyte, pebibyte, PB, PiB(noun)
a unit of information equal to 1024 tebibytes or 2^50 bytes
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