Definitions for "Ad valorem"
Keywords:  valorem, latin, according, duty, levy
A term used to denote a duty or charge laid upon goods, at a certain rate per cent upon their value, as stated in their invoice, -- in opposition to a specific sum upon a given quantity or number; as, an ad valorem duty of twenty per cent.
Per unit of value (i.e., divided by the price).
Taxes imposed at a percent of a value.