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Pb

1 American  
Symbol, Chemistry.

  1. lead.

PB 2 American  

  1. power brakes.

PB 3 American  
Symbol, Computers.

  1. petabyte.

p.b. 4 American  

abbreviation

  1. Baseball. passed ball; passed balls.

P.B. 5 American  

abbreviation

  1. British Pharmacopoeia.

P.B. 6 American  

abbreviation

  1. Prayer Book.

PB 1 British  

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
Pb 2 British  

symbol

  1. lead

"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

Etymology

Origin of Pb1

From the Latin word plumbum

Origin of P.B.5

From Latin Pharmacopoeia Britannica

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He noted however that most of the samples of polonium measured in the report were accompanied by activities from Pb-210.

From BBC

Ilium; Is, ischium; Pb, pubis; d.l, dorso-lumbar vertebrae; Cd, caudal vertebrae; Am, acetabulum.

From Project Gutenberg

Pt 36 30 Zn 23 21 Al 39 27 Cd 25 21 Pb ..

From Project Gutenberg

C, Si, Ge, Zr, Th, tetravalent; Ti, tetravalent and hexavalent; Sn, Pb, divalent and tetravalent; Ce, trivalent and tetravalent.

From Project Gutenberg

Lead is not a compound, but an element whose chemical symbol is Pb, taken from the Latin name for lead.

From Project Gutenberg

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.