pb meaning and definition

PB noun

Definition of Pb (noun)

1. 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"
   • synonyms: atomic number 82, lead
2. a unit of information equal to 1000 terabits or 10^15 bits
   • synonyms: Pbit, petabit
3. a unit of information equal to 1000 terabytes or 10^15 bytes
   • synonyms: petabyte
4. a unit of information equal to 1024 tebibytes or 2^50 bytes
   • synonyms: pebibyte, petabyte, PiB