• synonyms


Symbol, Chemistry.
  1. ytterbium.
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  1. yottabyte.
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or YB

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

Examples from the Web for yb

Historical Examples

  • But the limits of the height of Yb may be thus generally stated.

    The Stones of Venice, Volume I (of 3)

    John Ruskin

  • Suppose we were to put a spur or prop to Xb at each corner, so as to hold it fast in the centre of Yb.

  • There is surely still an appearance of separation between Xb and Yb, as if the one might slip off the other.

  • I have said nothing yet of the proportion of the height of Yb to its width, nor of that of Yb and Xb to each other.

  • Under such circumstances, it is well to exhibit the lower tiers of the foundation as well as Yb and Xb.

British Dictionary definitions for yb


the chemical symbol for
  1. ytterbium
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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

yb in Medicine


  1. The symbol for the elementytterbium
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

yb in Science


  1. The symbol for ytterbium.
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  1. A soft, silvery-white metallic element of the lanthanide series that occurs as seven stable isotopes. It is used as a radiation source for portable x-ray machines. Atomic number 70; atomic weight 173.04; melting point 824°C; boiling point 1,196°C; specific gravity 6.972 or 6.54 (25°C) depending on allotropic form; valence 2, 3. See Periodic Table.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.