lactic

adjective

lac·​tic ˈlak-tik 

1

a

: of or relating to milk

b

: obtained from sour milk or whey

2

: involving the production of lactic acid

Examples of lactic in a Sentence

Recent Examples on the Web

If plugged pores or excess keratin is the bigger issue, gentle exfoliators such as lactic or salicylic acid can loosen excess dead skin and keratin. — Christa Joanna Lee, Allure, 19 Sep. 2026

It was underscored in the Tour’s final kilometers, a blur of hurt and lactic and guts over the Paris cobbles, swapping turns with Mathieu van der Poel towards a dream win on the Champs-Élysées. — Jacob Whitehead, New York Times, 26 July 2026

Better Balanced Blood Sugar The fermentation process used to make sourdough produces organic acids, such as lactic and acetic acids, which help slow the absorption of starch in the digestive tract. — Jillian Kubala, Health, 21 June 2026

Specifically, fermentation produces lactic and acetic acids, which slow starch absorption in the digestive tract, according to Ehsani. — Kirsten Nunez, Martha Stewart, 14 June 2026

Word History

First Known Use

1790, in the meaning defined at sense 1a

Phrases Containing lactic

• lactic acid

Rhymes for lactic

• tactic
• anaphylactic
• extragalactic
• intergalactic
• stereotactic
• chemotactic
• chiropractic
• isotactic
• prophylactic
• climactic
• didactic
• galactic

Medical Definition

lactic

adjective

lac·​tic ˈlak-tik 

1

a

: of or relating to milk

b

: obtained from sour milk or whey

2

: involving the production of lactic acid

lactic fermentation