• n (nano) = 0.000000001 (prefix)
• N = newton (force)
• Na = avogadro (unknown units)
• nail (cloth nail) = 0.0625 yard (length)
• nano = 0.000000001 (prefix)
• naut mi = nautical mile (length)
• nautical league = 3 nautical mile (length)
• nautical mile = 1852 m (length)
• naval shot = 15 fathom (length)
• nebuchadnezzar = 10 magnum (volume)
• net hundredweight = short hundredweight (mass)
• net ton = short ton (mass)
• neutron mass (neutron rest mass) = 1.67492E-27 kg (mass)
• newton = kg*m/s^2 (force; derived unit)
• nibble = 0.5 byte (data)
• nit = cd/m^2 (luminance; derived unit)
• NL = loschmidt (number concentration)
• nmi = nautical mile (length)
• nmile = nautical mile (length)
• noggin = 0.125 quart (volume)
• nonillion = 1E+30 (prefix)
• novennial = 9 yr (time)
• nox = 0.001 lux (illuminance)
• Nt = newton (force)
• Number Concentration
  • loschmidt (Loschmidt's constant) = 2.68719E+25 1/m^3
  • NL = loschmidt
  • number concentration = 1/m^3 (category unit)
• number concentration = 1/m^3 (number concentration; category unit)

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