Lux

M —The symbol for the magnetic moment of a magnet. m. —1. Abbreviation for ma . 2. The symbol for unit quantity of magnetism, or unit pole. 3. Abbreviation for meter, a unit of length. 4. Abbreviation for minute, a unit of time. M —The Greek letter (mw) corresponding to m, used: (1) as the symbol for magnetic permeability, (2) as the symbol for micron, a unit of length.