angstrom unit

Noun
  1. A metric unit of length equal to one ten billionth of a meter (or 0.0001 micron);
    Used to specify wavelengths of electromagnetic radiation (synset 113679721)
    is a type of: metric linear unit - a linear unit of distance in metric terms
    has: micromicron, picometer, picometre - a metric unit of length equal to one trillionth of a meter
    is a part of: micromillimeter, micromillimetre, millimicron, nanometer, nanometre, nm - a metric unit of length equal to one billionth of a meter
    same as: a, angstrom

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