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New American Oxford Dictionary

lactase

lac tase |ˈlakˌtās, -tāz ˈlækteɪs | ▶noun Biochemistry an enzyme that catalyzes the hydrolysis of lactose to glucose and galactose. ORIGIN late 19th cent.: from lactose + -ase .

 

Oxford Dictionary

lactase

lactase |ˈlakteɪz | ▶noun [ mass noun ] Biochemistry an enzyme which catalyses the hydrolysis of lactose to glucose and galactose. ORIGIN late 19th cent.: from lactose + -ase .