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PB

1.
power brakes.

PB

Symbol, Computers.
1.

Pb

Symbol, Chemistry
1.
lead.
Origin
< Latin plumbum

P.B.1

1.
British Pharmacopoeia.
Origin
< Latin Pharmacopoeia Britannica

P.B.2

1.
Prayer Book.

p.b.

1.
Baseball. passed ball; passed balls.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for PB

Pb

Chemical symbol
1.
lead
Word Origin
from New Latin plumbum

PB

abbreviation
1.
Pharmacopoeia Britannica
2.
Prayer Book
3.
(athletics) personal best
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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PB in Medicine

Pb
The symbol for the element lead2.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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PB in Science
Pb  
The symbol for lead.
lead
  (lěd)   
Symbol Pb
A soft, ductile, heavy, bluish-gray metallic element that is extracted chiefly from galena. It is very durable and resistant to corrosion and is a poor conductor of electricity. Lead is used to make radiation shielding and containers for corrosive substances. It was once commonly used in pipes, solder, roofing, paint, and antiknock compounds in gasoline, but its use in these products has been curtailed because of its toxicity. Atomic number 82; atomic weight 207.2; melting point 327.5°C; boiling point 1,744°C; specific gravity 11.35; valence 2, 4. See Periodic Table. See Note at element.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Related Abbreviations for PB

pb

paperback [book]

Pb

lead

PB

  1. paperback [book]
  2. passbook
  3. peanut butter
  4. petabyte
  5. prayer book
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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