n. (Chem.) A substance resembling dextrin, obtained from the bulbs of the dahlia, the artichoke, and other sources, as a colorless, spongy, amorphous material. It is so called because by decomposition it yields levulose. [ Written also lævulin. ] [ 1913 Webster ]

a. (Chem.) Pertaining to, or denoting, an acid (called also acetyl-propionic acid), C5H8O3, obtained by the action of dilute acids on various sugars (as levulose). [ Written also laevulinic. ] [ 1913 Webster ]