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Noun nm has 2 senses
- nanometer, nanometre, nm, millimicron, micromillimeter, micromillimetre - a metric unit of length equal to one billionth of a meter
--1 is a kind of metric linear unit
--1 is a part of micron, micrometer
--1 has parts: angstrom, angstrom unit, A
- New Mexico, Land of Enchantment, NM - a state in southwestern United States on the Mexican border
--2 is a kind of American state
--2 is a part of
--2 has parts: