Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

lact-

combining form

Definition of lact-

  1. 1 :  milk <lactoglobulin>

  2. 2 a :  lactic acid <lactate> b :  lactose <lactase>



Variants of lact-

or lacti- or lacto-

Origin of lact-

French & Latin; French, from Latin, from lact-, lac — more at galaxy


Medical Dictionary

lact-

combining form

Medical Definition of lact-

  1. 1:  milk <lactogenesis>

  2. 2a:  lactic acid <lactate>b:  lactose <lactase>



Variants of lact-

or lacti- or lacto-

Learn More about lact-

  1. Medical Dictionary: Definition of "lact-"


Seen and Heard

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

WORD OF THE DAY

February 7, 2016

a slight offense

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

pince-nez spindrift duvet kittly-benders
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ