lactate

1 of 2

noun

lac·​tate ˈlak-ˌtāt How to pronounce lactate (audio)
: a salt or ester of lactic acid

lactate

2 of 2

verb

lactated; lactating

intransitive verb

: to secrete milk

Examples of lactate in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
Altitude Chambers As a result of physiological adaptations in response to decreased oxygen (known as hypoxia), altitude training can increase strength, VO2 max, power output, and lactate threshold. Chelsey Stone, Outside, 26 Dec. 2025 Calcium lactate crystals are most common in Cheddar and Colby cheeses, and may cause a slightly chalky or gritty mouthfeel. Katie Rosenhouse, Southern Living, 5 Dec. 2025
Verb
This deliberately obscures the possibility that some victims were lactating female bears — and for every dead mother, there was probably at least one cub in danger of dying from starvation. Orlando Sentinel Editorial Board, Sun Sentinel, 1 Jan. 2026 Researchers used healthy animals that were not pregnant or lactating for tagging. Michelle Del Rey, USA Today, 11 Dec. 2025 See All Example Sentences for lactate

Word History

Etymology

Verb

Latin lactatus, past participle of lactare, from lact-, lac

First Known Use

Noun

circa 1794, in the meaning defined above

Verb

circa 1889, in the meaning defined above

Time Traveler
The first known use of lactate was circa 1794

Browse Nearby Words

Cite this Entry

“Lactate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lactate. Accessed 11 Jan. 2026.

Kids Definition

lactate

verb
lac·​tate
ˈlak-ˌtāt
lactated; lactating
: to give off milk
lactation
lak-ˈtā-shən
noun

Medical Definition

lactate

1 of 2 noun
lac·​tate ˈlak-ˌtāt How to pronounce lactate (audio)
: a salt or ester of lactic acid

lactate

2 of 2 intransitive verb
lactated; lactating
: to secrete milk

More from Merriam-Webster on lactate

Last Updated: - Updated example sentences
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