pb
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
noun.
a unit of information equal to 1000 terabits or 10^15 bits
Synonym: pbit, petabit
noun.
a unit of information equal to 1000 terabytes or 10^15 bytes
Synonym: petabyte
noun.
a unit of information equal to 1024 tebibytes or 2^50 bytes
Synonym: pebibyte, petabyte, pib