Definition of lactose in English:


Syllabification: lac·tose
Pronunciation: /ˈlakˌtōs, -ˌtōz


  • A sugar present in milk. It is a disaccharide containing glucose and galactose units.
    More example sentences
    • The common sugars that form part of the diet are sucrose, lactose (milk sugar), and maltose.
    • The enzyme lactase breaks down the lactose to galactose and glucose.
    • Soymilk does not contain lactose (milk sugar) and can be drunk by those who are allergic to normal milk.

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Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
elaborate ornamentation of a vocal melody