nanometre nanometer • nanomia · · · Info · Definitions · Synonyms · Characters · · nanometre · · Text Latin · · Script 9 · · Length 3 · · Syllables Definitions · · · (noun) a metric unit of length equal to one billionth of a meter. Synonyms: nanometer, nm, millimicron, micromillimeter, micromillimetre. · · Noun Definition 1 Synonyms · · · nanometer · · Synonym 1 nm · · Synonym 2 millimicron · · Synonym 3 micromillimeter · · Synonym 4 micromillimetre · · Synonym 5 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074