lactase

play
noun lac·tase \ˈlak-ˌtās, -ˌtāz\

Definition of lactase

  1. :  an enzyme that hydrolyzes beta-galactosides (as lactose) and occurs especially in the intestines of young mammals and in yeasts

Origin and Etymology of lactase

International Scientific Vocabulary


First Known Use: 1891


Medical Dictionary

lactase

play
noun lac·tase \ˈlak-ˌtās, -ˌtāz\

Medical Definition of lactase

  1. :  an enzyme that hydrolyzes especially lactose to glucose and galactose and occurs especially in the intestines of young mammals and in yeasts


Learn More about lactase


Seen and Heard

What made you want to look up lactase? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to strike by flicking the finger outward

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • hot-dog--hot-dog--hot-dog--hot-dog-cat
  • Which of the following words is not a synonym for ‘a young person’?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ