angstrom unit

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	Definition:		[n]  a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
	Synonyms:		A, angstrom
	See Also:		metric linear unit, micromicron, micromillimeter, micromillimetre, millimicron, nanometer, nanometre, nm, picometer, picometre