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What is "citric acid"

Longman Dictionary of Contemporary English
citric acid
noun
EXAMPLES FROM CORPUS
▪ Less threatening contents named by Mr Milburn included sucrose, cocoa, butter, liquorice root and citric acid.
▪ The fact that lemons and limes share citric acid does not mean they share much else.
▪ This is also known as the citric acid cycle or Krebs cycle.
▪ Those used range from mild organic acids such as citric acid to phosphoric acid highly reactive sulphuric and hydrochloric acids.
The Collaborative International Dictionary
Citric acid

Citric \Cit"ric\, a. [Cf. F. citrique. See Citron.] (Chem.) Of, pertaining to, or derived from, the citron or lemon; as, citric acid.

Citric acid (Chem.), an organic acid, C3H4OH.(CO2H)3, extracted from lemons, currants, gooseberries, etc., as a white crystalline substance, having a pleasant sour taste.

Wiktionary
citric acid

n. (context organic compound English) A colourless crystalline compound, 2-hydroxy-1,2,3-propanetricarboxylic acid, C6H8O7, found in citrous fruit; it is used as a food additive and in the manufacture of citrates.

WordNet
citric acid

n. a weak water-soluble acid found in many fruits (especially citrus fruits); used as a flavoring agent

Wikipedia
Citric acid

Citric acid is a weak organic tricarboxylic acid having the chemical formula CHO. It occurs naturally in citrus fruits. In biochemistry, it is an intermediate in the citric acid cycle, which occurs in the metabolism of all aerobic organisms.

More than a million tons of citric acid are manufactured every year. It is used widely as an acidifier, as a flavoring and chelating agent.

A citrate is a derivative of citric acid; that is, the salts, esters, and the polyatomic anion found in solution. An example of the former, a salt is trisodium citrate; an ester is triethyl citrate. When part of a salt, the formula of the citrate ion is written as CHO or CHO(COO).

Usage examples of "citric acid".

On the other hand, the four leaves which had been in the citric acid, when treated with the phosphate, became decidedly inflected in 50 m.

Above all, they love to have two bottles, one with a solution of citric acid, and the other with carbonate of soda.

When unobtainable, a solution of 8 drachms of crystallized citric acid in 16 OZ.

The Gallo wine company noticed this and began marketing Thunderbird, a white port-citric acid mixture.

I took a long pull at my drink, identical to hers except for the citric acid.

One antidote is citric acid, and it was a lucky thing that a lime tree was growing among the orchids.

Today he does, and they are already used in the large-scale production of vitamins, enzymes, antibiotics, citric acid and other useful compounds.

A thick liquid laced with vitamins, tart with citric acid, almost solid protein.

Smith asked, his voice even over the telephone a citric acid bath.