amygdalic acid

noun Chemistry.

1. any of three stereoisomeric acids having the formula C8H8O3, especially dl-mandelic acid, a white, crystalline, slightly water-soluble solid obtainable from amygdalin: used chiefly in medicine as an antiseptic.

n.

1. An acid that has both antibacterial and bacteriostatic properties, used in treating urinary tract infections.