Akademik

nanometer
One-billionth of a meter (10−9 m).

* * *

nano·me·ter or chiefly Brit nano·me·tre 'nan-ə-.mēt-ər n one billionth of a meter abbr. nm

* * *

nano·me·ter (nm) (nanґo-me″tər) one billionth (10−9) of a meter.

Medical dictionary. 2011.