n. A white, sugar-like substance, C6H8.(OH)2, occurring naturally in a manna from Madagascar, and in certain plants, and produced artificially by the reduction of galactose and lactose.
the GNU version of the Collaborative International Dictionary of English
n. A white, sugarlike substance, C6H8.(OH)2, occurring naturally in a manna from Madagascar, and in certain plants, and produced artificially by the reduction of galactose and lactose or milk sugar.