Lev"u*lin (l&ebreve;v"&usl;*l&ibreve;n), 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.]