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angstrom

 - 10 dictionary results

ang⋅strom

  [ang-struhm]
Use angstrom in a Sentence
–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

Ång⋅ström

  [ang-struhm; Sw. awng-strœm]
–noun
An⋅ders Jo⋅nas  [an-derz joh-nuhs; Sw. ahn-duhrs-yoo-nahs] , 1814–74, Swedish astronomer and physicist.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To angstrom
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.]
Ång·ström   (āng'strəm, ông'strɶm)   
Swedish physicist and astronomer who founded the science of spectroscopy and discovered by studying the solar spectrum that there is hydrogen in the sun's atmosphere.
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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Word Origin & History

angstrom 
unit of length equal to one hundred millionth of a centimeter (used to measure wavelengths of light), 1892, named for Swed. physicist Anders Ångström (1814-74).
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: ang·strom
Pronunciation: 'a[ng]-str&m also 'o[ng]-
Function: noun
: a unit of length equal to one ten-billionth of a meter
Ångström, Anders Jonas (1814–1874) Swedish astronomer and physicist. One of the early formulators of the science of modern spectroscopy, Ångströmwrote extensively on terrestrial magnetism, the conduction of heat, and especially spectroscopy. He published a monumental map of the normal solar spectrum that expressed the length of light waves inunits of one ten-millionth of a millimeter, a unit of length now known as the angstrom. He discovered that hydrogen is present in the sun's atmosphere, and he was the first to examine the spectrum ofthe aurora borealis.
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

angstrom ang·strom or ång·strom (āng'strəm)
n.
Abbr. A, Å, angst
A unit of length equal to one hundred millionth (10-8) of a centimeter, used especially to specify radiation wavelengths.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
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.
Ångström   (āng'strəm)  Pronunciation Key 
Swedish physicist and astronomer who pioneered the use of the spectroscope in the analysis of radiation. By studying the spectrum of visible light given off by the Sun, Ångström discovered that there is hydrogen in the Sun's atmosphere. The angstrom unit of measurement is named for him.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia

angstrom

unit of length used chiefly in measuring wavelengths of light, equal to 1010 metre, or 0.1 nanometer. It is named for the 19th-century Swedish physicist Anders Jonas Angstrom. The angstrom and multiples of it, the micron (104 A) and the millimicron (10 A), are also used to measure such quantities as molecular diameters and the thickness of films on liquids

Learn more about angstrom with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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