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Pb

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Symbol, Chemistry.
  1. lead.
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Origin of Pb

From the Latin word plumbum

PB

  1. power brakes.
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PB

Symbol, Computers.
  1. petabyte.
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p.b.

  1. Baseball. passed ball; passed balls.
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P.B.1

  1. British Pharmacopoeia.
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Origin of P.B.1

From the Latin word Pharmacopoeia Britannica

P.B.2

  1. Prayer Book.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for pb

Historical Examples

  • Let P (fig. 2) be the particle and PB a normal to the surface.

    Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3

    Various

  • Blue and purple unite to form purple-blue (PB), popularly called violet.

    A Color Notation

    Albert H. Munsell

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

  • Now, similarly, at pB the sector B has come around and begins to pass behind P.


British Dictionary definitions for pb

Pb

the chemical symbol for
  1. lead
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Word Origin

from New Latin plumbum

PB

abbreviation for
  1. Pharmacopoeia Britannica
  2. Prayer Book
  3. athletics personal best
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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 in Medicine

Pb

  1. The symbol for the elementlead2

pb in Science

Pb

lead

[lĕd]
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.