milk sugar

from The American Heritage® Dictionary of the English Language, 4th Edition

• n. See lactose.

from the GNU version of the Collaborative International Dictionary of English

• n. See Lactose, and Sugar of milk (below).
• n. a variety of sugar characteristic of fresh milk, and isomeric with sucrose. See Lactose.

from The Century Dictionary and Cyclopedia

• n. Same as lactose.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• n. a sugar comprising one glucose molecule linked to a galactose molecule; occurs only in milk