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/ˈlæk.təʊs/ · noun
(biochemistry) The disaccharide sugar of milk and dairy products, C₁₂H₂₂O₁₁, a product of glucose and galactose used as a food and in medicinal compounds..
Use lactose when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Lactose means (biochemistry) The disaccharide sugar of milk and dairy products, C₁₂H₂₂O₁₁, a product of glucose and galactose used as a food and in medicinal compounds..
Common synonyms include lactobiose, milk sugar.
The opposite depends on the specific sense.
Use lactose where its definition matches the intended context.
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