nanometer

nanometer /nano·me·ter/ (nm) (nan´o-me?ter) one billionth (10-9) of a meter.

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nan·o·me·ter (nn-mtr)

n. Abbr. nm

One billionth (10^-9) of a meter.

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nanometer (nm) (naˈ·n·mēˑ·ter),

n a metric unit of measure defined as one billionth of a meter (0.000000001 or 10).

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nanometer (nm) (nan´mē´tr),

n a billionth of a meter (10⁹ meter). This term is now preferred over millimicron.

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nanometer

a unit of linear measure or wave length equal to one-thousand-millionth (10^-9) of a meter; nm; millimicron.