micromicron


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Noun1.micromicron - a metric unit of length equal to one trillionth of a meter
metric linear unit - a linear unit of distance in metric terms
femtometer, femtometre, fermi - a metric unit of length equal to one quadrillionth of a meter
A, angstrom, angstrom unit - a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation