QUANTI MINORIS. The name of a particular action in Louisiana. An action quanti minoris is one brought for the reduction of the price of a thing sold, in consequence of defects in the thing which is the object of the sale. 2. Such action must be commenced within twelve months from the date of the sale, or from the time within which the defect became known to the purchaser. 3 Mart. N. S. 287 11 Mart. Lo. R. 11.