1. atomic number 82, lead, pb

a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey

Example Sentences:
'the children were playing with lead soldiers'

• atomic number 82
• lead

2. pb, pbit, petabit

a unit of information equal to 1000 terabits or 10^15 bits

• pbit
• petabit

3. pb, petabyte

a unit of information equal to 1000 terabytes or 10^15 bytes

• petabyte

4. pb, pebibyte, petabyte, pib

a unit of information equal to 1024 tebibytes or 2^50 bytes

• pebibyte
• petabyte
• pib