Angstrom

//ˈæŋstɹəm// noun

Definitions

Noun
  1. 1
    A unit of length equal to 10⁻¹⁰ meters (that is, one ten-billionth of a meter), approximately the size of an atom, and denoted by the symbol Å, used especially to measure the wavelength of electromagnetic radiation or distances between atoms.
  2. 2
    Alternative letter-case form of ang­strom. alt-of, countable, uncountable
  3. 3
    a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation wordnet

Etymology

Borrowed from Swedish ångström, named after Swedish physicist Anders Jonas Ångström.

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