ad valorem tax ad valorem • advance · · · Info · Definitions · Characters · · ad valorem tax · · Text Common · · Latin · · Scripts 14 · · Length 5 · · Syllables Definitions · · · (noun) a tax levied on the difference between a commodity's price before taxes and its cost of production. Synonyms: VAT, value-added tax, ad valorem tax. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 v latin small letter v U+0076 x latin small letter x U+0078