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Dictionary

lac•tose

Pronunciation: (lak'tōs), [key]
—n.
1. Biochem.a disaccharide, C₁₂H₂₂O₁₁, present in milk, that upon hydrolysis yields glucose and galactose.
2. a white, crystalline, sweet, water-soluble commercial form of this compound, obtained from whey and used in infant feedings, in confections and other foods, in bacteriological media, and in pharmacology as a diluent and excipient. Also called milk sugar, sugar of milk.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

lactoscope

lactovegetarian

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