lactase
/ˈlækteɪs/
noun
- An enzyme in the small intestine that breaks down lactose (the sugar in milk) into simpler sugars that the body can absorb.
- Lactase supplements can help people with lactose intolerance enjoy milk and cheese.
- The body produces lactase naturally, but production often decreases with age.
- People who lack enough lactase may have trouble digesting dairy products.