nm -abbr

  1. nanometer
  2. nautical mile

NM -abbr

  1. New Mexico

NMDA [,en-(,)em-(,)dē-'ā] -n

  1. a synthetic amino acid C 5H 9NO 4that binds selectively to a subset of glutamate receptors on neurons where the binding of glutamate results in the opening of calcium channels

NMHA -abbr

  1. National Mental Health Association

NMI -abbr

  1. no middle initial

NMR -abbr

  1. nuclear magnetic resonance