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Angstroms - 3 dictionary results

ang⋅strom

  [ang-struhm]
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–noun (often initial capital letter)
a unit of length, equal to one tenth of a millimicron, or one ten millionth of a millimeter, primarily used to express electromagnetic wavelengths. Symbol: Å; Abbreviation: A
Also called angstrom unit, Angstrom unit.

Origin:
1895–1900; named after A. J. Ångström
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ang·strom or ång·strom   (āng'strəm)   
n.   Abbr. A or Å or angst
A unit of length equal to one hundred-millionth (10-8) of a centimeter, used especially to specify radiation wavelengths. Also called angstrom unit. See Table at measurement.

[After Anders Jonas Ångström.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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angstrom   (āng'strəm)  Pronunciation Key 
A unit of length equal to one hundred-millionth (10-10) of a meter. It was once used to measure wavelengths of light and the diameters of atoms, but has now been mostly replaced by the nanometer.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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