tartaric acid
noun
tar·tar·ic acid (ˌ)tär-ˈter-ik- 
(ˌ)tär-ˈta-rik-
: a strong dicarboxylic acid C4H6O6 of plant origin that occurs in various isomeric forms, is usually obtained from tartar, and is used especially in food and medicines, in photography, in wine making, and in making salts and esters
Example Sentences
Recent Examples on the Web Plus, the blend of amino acids, lactic acid and tartaric acid helps strengthen strands, heal damage from color and prevent fading. 
Dori Price, Good Housekeeping, 15 Aug. 2022 One of the most common red-flag fruits are grapes, which are highly toxic to dogs because of tartaric acid that can cause vomiting, diarrhea or even kidney failure, according to Grady Veterinarian Hospital in Cincinnati. Clare Mulroy, USA TODAY, 6 July 2022 According to Miller’s research, the earliest mention of red drink on the mainland dates to the 1870s South, where Black Americans colored lemonade red with strawberries, sumac or tartaric acid. Sahar Khan, Smithsonian Magazine, 20 May 2022 The most common types of AHAs are glycolic acid, lactic acid, and mandelic acid, but there are others including tartaric acid, citric acid, and malic acid. Sarah Madaus, SELF, 18 May 2022 The two ingredients work well together to prevent signs of aging, alongside squalane for moisture and tartaric acid which helps the skin absorb product more easily. Akili King, Vogue, 1 Apr. 2021 Bartley was able to replicate the crucial fruit by adding citric, malic, and tartaric acid plus lime oil to a blend of tequila, agave, and distilled water. Larissa Zimberoff, Wired, 17 Dec. 2020 O’Keefe said people might have turned to cream of tartar as a home remedy for migraines because dihydroergotamine, a treatment for migraines, has tartaric acid in its structure. Donnelle Eller, USA TODAY, 5 Sep. 2020 Chef Verner uses cachaça in a spritz type cocktail with chardonnay, club soda, tartaric acid, and optional eucalyptus smoke. Patricia Doherty, Travel + Leisure, 20 Aug. 2020 See More
Dori Price, Good Housekeeping, 15 Aug. 2022 One of the most common red-flag fruits are grapes, which are highly toxic to dogs because of tartaric acid that can cause vomiting, diarrhea or even kidney failure, according to Grady Veterinarian Hospital in Cincinnati. Clare Mulroy, USA TODAY, 6 July 2022 According to Miller’s research, the earliest mention of red drink on the mainland dates to the 1870s South, where Black Americans colored lemonade red with strawberries, sumac or tartaric acid. Sahar Khan, Smithsonian Magazine, 20 May 2022 The most common types of AHAs are glycolic acid, lactic acid, and mandelic acid, but there are others including tartaric acid, citric acid, and malic acid. Sarah Madaus, SELF, 18 May 2022 The two ingredients work well together to prevent signs of aging, alongside squalane for moisture and tartaric acid which helps the skin absorb product more easily. Akili King, Vogue, 1 Apr. 2021 Bartley was able to replicate the crucial fruit by adding citric, malic, and tartaric acid plus lime oil to a blend of tequila, agave, and distilled water. Larissa Zimberoff, Wired, 17 Dec. 2020 O’Keefe said people might have turned to cream of tartar as a home remedy for migraines because dihydroergotamine, a treatment for migraines, has tartaric acid in its structure. Donnelle Eller, USA TODAY, 5 Sep. 2020 Chef Verner uses cachaça in a spritz type cocktail with chardonnay, club soda, tartaric acid, and optional eucalyptus smoke. Patricia Doherty, Travel + Leisure, 20 Aug. 2020 See More Word History
First Known Use
1810, in the meaning defined above
Medical Definition
tartaric acid
noun
tar·tar·ic acid (ˌ)tär-ˌtar-ik-
: a strong dicarboxylic acid C4H6O6 of plant origin that occurs in three optically isomeric crystalline forms
especially : a dextrorotatory L-form of tartaric acid that is widely distributed in plants and especially in fruits (as grapes) both free and combined as salts and that is used chiefly in effervescent beverages and pharmaceutical preparations, in desserts and candies, in photography, in making salts and esters, and as a sequestering agent