Noun lactase has 1 sense

1. lactase, Lactaid - any of a group of enzymes (trade name Lactaid) that hydrolyze lactose to glucose and galactose
   --₁ is a kind of disaccharidase
   

Lactase

Noun:
Lactase is an enzyme that breaks down lactose, a sugar found in milk and dairy products, into simpler sugars, glucose and galactose. It is produced in the small intestine of humans and other mammals.
Example sentence: The deficiency of lactase can lead to lactose intolerance in some individuals.
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Adjective:
When referring to a substance that contains or is related to lactase.
Example sentence: She bought lactase-free milk for her lactose-intolerant friend.
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Verb:
When utilizing lactase or treating with lactase.
Example sentence: The company lactases the milk to make it suitable for lactose-intolerant consumers.
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