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
With a bright green, mint-scented formula, Tata Harper’s Clarifying Cleanser stars prickly pear enzymes, willow bark extract, lactic, citric, and salicylic acids to speed up skin cell turnover and balance oil production.
—
Sarah Felbin, Allure, 20 May 2026
The dish had hardly a hint of sweetness at all beyond the butter’s lactic tang.
—Helen Rosner, New Yorker, 10 May 2026
Lactic Acid While lactic and glycolic acids are both alpha-hydroxy acids (AHAs), lactic acid is better suited for dry and/or sensitive skin types.
—Daisy Maldonado, InStyle, 2 Apr. 2026
Look for ingredients like lactic and poly hydroxy acid to gently exfoliate, recommends Nila, and always follow with a hydrating serum or moisturizer.
—Hannah Coates, Vogue, 9 Mar. 2026
See All Example Sentences for lactic
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Sarah Felbin, Allure, 20 May 2026
The dish had hardly a hint of sweetness at all beyond the butter’s lactic tang.
—Helen Rosner, New Yorker, 10 May 2026
Lactic Acid While lactic and glycolic acids are both alpha-hydroxy acids (AHAs), lactic acid is better suited for dry and/or sensitive skin types.
—Daisy Maldonado, InStyle, 2 Apr. 2026
Look for ingredients like lactic and poly hydroxy acid to gently exfoliate, recommends Nila, and always follow with a hydrating serum or moisturizer.
—Hannah Coates, Vogue, 9 Mar. 2026
See All Example Sentences for lactic
Cite this Entry
“Lactic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lactic. Accessed 21 May. 2026.
Copy CitationMedical 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
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