pyruvic acid
noun
py·ru·vic acid pī-ˈrü-vik- 
: a 3-carbon acid C3H4O3 that in carbohydrate metabolism is an important intermediate product formed especially during glycolysis
Example Sentences
Recent Examples on the Web Pigment-specific peels, like pyruvic acid, are recommended since studies have shown this ingredient is specifically effective for diminishing hyperpigmentation. 
Julie Ricevuto, Allure, 22 Oct. 2020 For example, carbonaceous chondrites—some of the oldest rocks in the solar system—were recently found to harbor pyruvic acid, which is essential for metabolism. David W. Brown, Smithsonian, 2 July 2018
Julie Ricevuto, Allure, 22 Oct. 2020 For example, carbonaceous chondrites—some of the oldest rocks in the solar system—were recently found to harbor pyruvic acid, which is essential for metabolism. David W. Brown, Smithsonian, 2 July 2018 Word History
Etymology
International Scientific Vocabulary pyr- + Latin uva grapes; from its importance in fermentation — more at uvula
First Known Use
1838, in the meaning defined above
Medical Definition
pyruvic acid
noun
py·ru·vic acid pī-ˌrü-vik-
: a 3-carbon acid C3H4O3 that is an intermediate in carbohydrate metabolism and can be formed either from glucose after phosphorylation or from glycogen by glycolysis