名詞 n-:

1. (of a solution) concentration expressed in gram equivalents of solute per liter
   同義詞：normality, N
2. a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues
   同義詞：nitrogen, N, atomic number 7
3. the cardinal compass point that is at 0 or 360 degrees
   同義詞：north, due north, northward, N
4. a unit of force equal to the force that imparts an acceleration of 1 m/sec/sec to a mass of 1 kilogram; equal to 100,000 dynes
   同義詞：newton, N
5. the 14th letter of the Roman alphabet
   同義詞：N, letter n