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DictionaryangstromUnit of length
noun

angstrom

ANG-strum/ˈæŋstrəm/

a unit of length equal to one ten-billionth of a meter

The scale beneath the atoms marks a length of one angstrom.

A close-up scientific model of two neighboring atoms, with a short calibrated scale bar beneath them marked “10⁻¹⁰ m,” making the extremely small length concrete.
Etymology
angstromSwedishsurname of physicist Anders Ångström

The unit honors Swedish physicist Anders Ångström. Used to measure wavelengths of light, it equals one ten-billionth of a meter.

In context

NPTEL IIT Bombay8:29
x ray is an electromagnetic radiation of wavelength typically around 1 to 10 angstrom so all these can cause ionization
Week 4: Lecture 09A

More examples

  • One nanometer equals ten angstroms.
  • The distance between these atoms is about two angstroms.
  • The chart lists wavelengths of light in angstroms.

Forms

angstrom · angstroms

Similar words

nanometer
A length unit equal to ten angstroms, not one.
picometer
A length unit equal to one hundredth of an angstrom.