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lactose

/ˈlæk.təʊs/ · lac·to·se
noun
  1. The disaccharide sugar found in milk and dairy products, chemically C12H22O11, composed of glucose and galactose, used as a food additive and in medicinal formulations. Lactose is the primary carbohydrate in cow's milk, providing energy for infants.

Synonyms

Did you know? Lactose intolerance affects about 65% of the adult population worldwide, making it one of the most common dietary sensitivities.
Written by Lexi Wordsworth, Dictionary Editor 0 lookups Added Jul 23, 2026