Nibble is a unit of information.
Nit
(Units Package Symbol) Nit is a unit of luminance (photometric brightness).
Noggin is a unit of volume.
NuclearMagneton is a unit of magnetic moment.
Obolos is a unit of weight.
Oersted is the derived CGS unit of magnetic intensity.
Ohm
(Units Package Symbol) Ohm is the derived SI unit of electric resistance.
Omer
(Units Package Symbol) Omer is a unit of volume.
Ounce
(Units Package Symbol) Ounce is a unit of weight.
Parsec is a unit of length.