Nouns

(n)nitrogen, N, atomic number 7a 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
(n)north, due north, northward, Nthe cardinal compass point that is at 0 or 360 degrees
(n)newton, Na 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
(n)normality, N(of a solution) concentration expressed in gram equivalents of solute per liter
(n)N, nthe 14th letter of the Roman alphabet