maxwell(n = noun.quantity) mx - a cgs unit of magnetic flux equal to the flux perpendicular to an area of 1 square centimeter in a magnetic field of 1 gauss;
A cgs unit of magnetic flux, abbreviated Mx; it is equal to the magnetic flux passing through one sqaure centimeter which is normal to a magnetic field of one gauss. [WordNet 1.5]
maxwell, n. a unit of magnetic flux in the c.g.s. system, equal to that induced through one square centimetre by a perpendicular magnetic field of one gauss.