noun Etymology: International Scientific Vocabulary Date: 1891 an enzyme that hydrolyzes beta-galactosides (as lactose) and occurs especially in the intestines of young mammals and in yeasts
LACTASE
Meaning of LACTASE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012