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• angstrom
  angstrom

  noun

  a unit of length, equal to one tenth of a millimicron, or one ten millionth of a millimeter, primarily used to express electromagnetic wavelengths. Å; A
• Ångström
  Ångström

  noun

  Anders Jonas 1814–74, Swedish astronomer and physicist.

angstrom

¹ American  

[ang-struhm] / 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. Å; A

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Ångström ² American  

[ang-struhm, awng-strœm] / ˈæŋ strəm, ˈɔŋ strœm /

noun

1. Anders Jonas 1814–74, Swedish astronomer and physicist.

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Ångström ¹ British  

/ ˈæŋstrəm, ˈɔŋstrœm /

noun

1. Anders Jonas (ˈandərs ˈjuːnas). 1814–74, Swedish physicist, noted for his work on spectroscopy and solar physics

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angstrom ² British  

/ ˈæŋstrʌm, -strəm /

noun

1.  Å.   A.  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

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Ångström ¹ Scientific  

/ ăng′strəm /

1. 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.

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angstrom ² Scientific  

/ ăng′strəm /

1. 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.

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Etymology

Origin of angstrom

First recorded in 1895–1900; named after A. J. Ångström ( def. )