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[nan-uh-mee-ter, ney-nuh-] /ˈnæn əˌmi tər, ˈneɪ nə-/

one billionth of a .
Abbreviation: nm.

also nanometre, 1963, from nano- + meter (n.2).

nanometer nan·o·me·ter (nān’ə-mē’tər)
Abbr. nm
One billionth (10-9) of a meter.
One billionth (10-9) of a meter.


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  • Nanometre

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  • Nanomole

    [nan-uh-mohl, ney-nuh-] /ˈnæn əˌmoʊl, ˈneɪ nə-/ noun, Chemistry. 1. one billionth of a .

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  • Nanophthalmia

    nanophthalmia nan·oph·thal·mi·a (nān’ŏf-thāl’mē-ə) n. See microphthalmia.

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