- 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.
Meaning of 'ad valorem' (Princeton's WordNet)
1 . ad valorem
[ r]
Meaning (1): - in proportion to the estimated value of the goods taxed