Search Result for "diamagnetism": 
Wordnet 3.0

NOUN (1)

1. phenomenon exhibited by materials like copper or bismuth that become magnetized in a magnetic field with a polarity opposite to the magnetic force; unlike iron they are slightly repelled by a magnet;


The Collaborative International Dictionary of English v.0.48:

Diamagnetism \Di`a*mag"net*ism\, n. 1. The science which treats of diamagnetic phenomena, and of the properties of diamagnetic bodies. [1913 Webster] 2. The magnetic action which characterizes diamagnetic substances, the magnetic moments of which tend to oppose an externally applied magnetic field. Contrasted with paramagnetism and ferromagnetism. [1913 Webster +PJC]
WordNet (r) 3.0 (2006):

diamagnetism n 1: phenomenon exhibited by materials like copper or bismuth that become magnetized in a magnetic field with a polarity opposite to the magnetic force; unlike iron they are slightly repelled by a magnet