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1. The 14th letter of the Roman alphabet
   - N, en

1. A common nonmetallic element that is normally a colourless odourless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues
   - nitrogen, atomic number 7
    
2. The cardinal compass point that is at 0 or 360 degrees
   - north, due north, northward
    
3. (of a solution) concentration expressed in gram equivalents of solute per litre
   - normality
    
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
   - newton

Derived forms: Ns, ns

Type of: alphabetic character, cardinal compass point, chemical element, element, force unit, gas, letter, letter of the alphabet, relative quantity

Part of: air, Latin alphabet, Roman alphabet, sthene

Encyclopedia: N,N-dimethyl-2-hydroxyphenoxy-2-phenoxyethylamine