dipole moment

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. The product of either charge in an electric dipole with the distance separating them.
2. n. The product of the strength of either pole in a magnetic dipole with the distance separating them.

Wiktionary

1. n. the vector product of the charge on either pole of a dipole and the distance separating them

WordNet 3.0

1. n. the moment of a dipole