dipole moment

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The product of either charge in an electric dipole with the distance separating them.
• noun The product of the strength of either pole in a magnetic dipole with the distance separating them.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun the vector product of the charge on either pole of a dipole and the distance separating them

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the moment of a dipole