Angstrom
/ˈæŋstɹəm/ noun
noun ·Rare ·Advanced level
Definitions
Noun
- 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 Alternative letter-case form of angstrom. alt-of, countable, uncountable
- 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.