v. /oh'veuhr bal"euhns/ ; n. /oh"veuhr bal'euhns/ , v. , overbalanced, overbalancing , n.
v.t.
1. to outweigh: The opportunity overbalances the disadvantages of leaving town.
2. to cause to lose balance or to fall or turn over: He accidentally overbalanced a vase.
n.
3. an excessive weight or amount.
4. something that more than balances or more than equals: An overbalance of imports depleted the country's treasury.
[ 1600-10; OVER- + BALANCE ]