follow Dictionary.com

11 Trending Words of 2014

angstrom

[ang-struh m] /ˈæŋ strəm/
noun, (often initial capital letter)
1.
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
1895-1900; named after A. J. Ångström
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for angstrom unit

angstrom

/ˈæŋstrʌm; -strəm/
noun
1.
Also called angstrom unit. a unit of length equal to 10–10 metre, used principally to express the wavelengths of electromagnetic radiations. It is equivalent to 0.1 nanometre Å, A
Word Origin
C20: named after Anders J. Ångström
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
Cite This Source
Word Origin and History for angstrom unit

angstrom

n.

unit of length equal to one hundred millionth of a centimeter (used to measure wavelengths of light), 1892, named for Swedish physicist Anders Ångström (1814-1874).

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
angstrom unit in Medicine

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.
Cite This Source
angstrom unit in Science
angstrom
  (āng'strəm)   
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.
Cite This Source
Encyclopedia Article for angstrom unit

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.
Cite This Source

Word of the Day

Difficulty index for angstrom

Most English speakers likely know this word

Word Value for angstrom

11
14
Scrabble Words With Friends

Nearby words for angstrom unit