maxwellPronunciation: /ˈmakswɛl/ (abbreviation: Mx)Definition of maxwell noun Physics 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. Origin: early 20th century: named after J. C. Maxwell (see Maxwell, James Clerk)maxwell in other Oxford dictionaries Definition of maxwell in the US English dictionary