Pronunciation: (pri-pon'du-rāt"), [key]
—v.i., -at•ed, -at•ing.
1. to exceed something else in weight; be the heavier.
2. to incline downward or descend, as one scale or end of a balance, because of greater weight; be weighed down.
3. to be superior in power, force, influence, number, amount, etc.; predominate: Evidence for the accused preponderated at the trial.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.