Definition of lactose
: a disaccharide sugar C12H22O11 that is present in milk and yields glucose and galactose upon hydrolysis and yields especially lactic acid upon fermentation
Recent Examples of lactose from the Web
The sugar found in unflavored milk (whole, fat-free, or anything in between) is lactose, a naturally occurring sugar.
And fliers with gluten and dairy allergies will appreciate the lactose-free chocolate bars, coffee creamer and yogurt and gluten-free candy bars and cakes.
About 70 percent of the snow is dairy-free — important to Cody Carta, who has a lactose allergy.
People who are officially lactose intolerant (or lactose-free) eat it and digest it.
Even though the baby was not diagnosed with lactose or gluten intolerance, the parents suspected Lucas had that, and started experimenting with different alternatives like rice, quinoa and buckwheat milk.
All milk (flavored and unflavored) has the sugar lactose in it.
FODMAPs are fermentable sugar alcohols and sugars including lactose (the sugar in milk) and fructose (the sugar in fruit).
Clozapine, on the other hand, contains milk sugar (lactose) and magnesium stearate, both animal-based.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lactose'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of lactose
International Scientific Vocabulary
First Known Use: 1857See Words from the same year
LACTOSE Defined for English Language Learners
Definition of lactose for English Language Learners
chemistry : a type of sugar that is present in milk
LACTOSE Defined for Kids
Definition of lactose for Students
: a sugar that is found in milk
Medical Definition of lactose
: a disaccharide sugar C12H22O11 that is present in milk, yields glucose and galactose upon hydrolysis, yields especially lactic acid upon fermentation, and is used chiefly in foods, medicines, and culture media (as for the manufacture of penicillin)—called also milk sugar
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