Pb

symb. Chem. the element lead.
Etymology: L plumbum

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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

• Syn: ↑lead, ↑atomic number 82

• Hypernyms: ↑metallic element, ↑metal

• Hyponyms: ↑hard lead, ↑antimonial lead, ↑pig lead

• Substance Holonyms: ↑galena, ↑cerussite, ↑white lead ore

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

• Syn: ↑petabit, ↑Pbit

• Hypernyms: ↑computer memory unit

• Part Holonyms: ↑exabit, ↑Ebit, ↑Eb

• Part Meronyms: ↑terabit, ↑Tbit, ↑Tb

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abbreviation

1. passbook

2. passed ball

3. patrol boat

4. patrol bomber

5. permanent bunkers

6. phonetically balanced

7. piebald

8. pocket book

9. prayer book

10. privately bonded

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power brakes.

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abbrev

1. Pharmacopoeia Britannica

2. Plymouth Brethren

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Pb (no period),

lead (chemical element).

P.B.,

1. British Pharmacopoeia (Latin Pharmacopoeia Britannica).

2. Prayer Book.

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abbr.

■ British Pharmacopoeia

Origin:

Latin Pharmacopoeia Britannica

■ Prayer Book

■ petabyte