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A unit of length equal to one thousandth (10-3) of a micrometer or one billionth (10-9) of a meter.


(Units) an obsolete name for nanometre


(ˈnæn əˌmi tər, ˈneɪ nə-)

a unit of measure equal to one billionth of a meter. Abbr.: nm
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.millimicron - a metric unit of length equal to one billionth of a meter
metric linear unit - a linear unit of distance in metric terms
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
micrometer, micron - a metric unit of length equal to one millionth of a meter
References in periodicals archive ?
Tenders are invited for Red Dry Magnetic Powder, Non Fluorescent For Mpi Method, Size 150 Millimicron, Sae Sensitivity 6-7 In 01 Kg, Plastic Pack, Specn.Mpi 1949/Mil-Std-271/Asme B And Pv Code Sec Viastm E-709, Rdso M And C/Ndt/8/91/Appd.
A small earthquake, with a magnitude of about 4, will cause displacements of about 10 millimicrons. (A millimicron is a billionth of a meter) The seismometer will also be responding faithfully to true earth ambient noise with frequencies around 1 hertz and displacements less than 1 millimicron.
Offers several carbon black grades in the 16-20 millimicron size range for use in plastics as uv absorbers.