What does angstrom mean?

Definitions for angstrom
ˈæŋ strəmangstrom

This dictionary definitions page includes all the possible meanings, example usage and translations of the word angstrom.

Princeton's WordNet

  1. angstrom, angstrom unit, Anoun

    a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation


  1. angstromnoun

    A very small unit of length, 10 m, approximately the size of an atom, used especially to measure the wavelength of electromagnetic radiation or distances between atoms. Symbol Å

  2. Etymology: From the name of the physicist Anders Jonas Ångström.


  1. Angstrom

    The angstrom (, ; ANG-strəm, ANG-strum) or ångström is a metric unit of length equal to 10−10 m; that is, one ten-billionth (US) of a metre, a hundred-millionth of a centimetre, 0.1 nanometre, or 100 picometres. Its symbol is Å, a letter of the Swedish alphabet. The unit is named after the Swedish physicist Anders Jonas Ångström (1814–1874).The angstrom is often used in the natural sciences and technology to express sizes of atoms, molecules, microscopic biological structures, and lengths of chemical bonds, arrangement of atoms in crystals, wavelengths of electromagnetic radiation, and dimensions of integrated circuit parts. The atomic (covalent) radii of phosphorus, sulfur, and chlorine are about 1 angstrom, while that of hydrogen is about 0.5 angstroms. Visible light has wavelengths in the range of 4000–7000 Å. In the late 19th century, spectroscopists adopted 10−10 of a metre as a convenient unit to express the wavelengths of characteristic spectral lines (monochromatic components of the emission spectrum) of chemical elements. However, they soon realized that the definition of the metre at the time, based on a material artifact, was not accurate enough for their work. So, around 1907 they defined their own unit of length, which they called "Ångström", based on the wavelength of a specific spectral line. It was only in 1960, when the metre was redefined in the same way, that the angstrom became again equal to 10−10 metre. Even though it is a decimal power fraction of the metre, the angstrom was never part of the SI system of units, and it has been increasingly replaced by the nanometre or picometre. Up to 2019, it was listed as a compatible unit by both the International Bureau of Weights and Measures (BIPM) and the US National Institute of Standards and Technology (NIST), but it is not mentioned in the 9th edition of the official SI document, the "BIPM Brochure" (2019) or in the NIST version of the same.The 8th edition of the BIPM brochure (2006) and the NIST guide 811 (2008) used the spelling ångström, with Swedish letters; however, this form is rare in English texts. Some popular US dictionaries list only the spelling angstrom.The accepted symbol is "Å", no matter how the unit is spelled. However, "A" is often used in less formal contexts or typographically limited media.


  1. Angstrom

    The Ångström is a unit of length equal to 10−10 m or 0.1 nm. Its symbol is the Swedish letter Å. The Ångström is often used in the natural sciences and technology to express the sizes of atoms, molecules, and microscopic biological structures, the lengths of chemical bonds, the arrangement of atoms in crystals, the wavelengths of electromagnetic radiation, and the dimensions of integrated circuit parts. Atoms of phosphorus, sulfur and chlorine are 1 Å in covalent radius, while a hydrogen atom is 0.25 Å; see atomic radius. The unit was named after the Swedish physicist Anders Jonas Ångström. The symbol is always written with a ring diacritic, as in the Swedish letter. Although the unit's name is often written in English without the diacritics, the official definitions contain diacritics.

Surnames Frequency by Census Records


    According to the U.S. Census Bureau, Angstrom is ranked #95115 in terms of the most common surnames in America.

    The Angstrom surname appeared 192 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 0 would have the surname Angstrom.

    94.2% or 181 total occurrences were White.

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How to pronounce angstrom?

How to say angstrom in sign language?


  1. Chaldean Numerology

    The numerical value of angstrom in Chaldean Numerology is: 2

  2. Pythagorean Numerology

    The numerical value of angstrom in Pythagorean Numerology is: 8

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