the phenomenon exhibited by substances that have a relative permeability less than unity and a negative susceptibility. It is caused by the orbital motion of electrons in the atoms of the material and is unaffected by temperature
Compare ferromagnetism, paramagnetism
diamagnetism in American English
(ˌdaɪəˈmægnəˌtɪzəm)
noun
1.
the property that certain substances have of being weakly repelled by both poles of a magnet
2.
diamagnetic force
3.
diamagnetic phenomena
4.
the science that deals with such phenomena and substances