angstrom
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.
Pronounced as (IPA)
/ˈæŋstɹəm/
Etymology
Borrowed from Swedish ångström, named after Swedish physicist Anders Jonas Ångström.
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