acid

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♦ acid /'æsɪd/ (acids)
1 [N-MASS]
An acid is a chemical substance, usually a liquid, which contains hydrogen and can react with other substances to form salts. Some acids burn or dissolve other substances that they come into contact with.
...citric acid...
2 [ADJ]
An acid substance contains acid.
These shrubs must have an acid, lime-free soil.
● acidity [N-UNCOUNT] oft N of n
...the acidity of rainwater.
3 [N-UNCOUNT]
The drug LSD is sometimes referred to as acid. (INFORMAL)
4
see also amino acid, hydrochloric acid, nucleic acid, nucleic acid, sulphuric acidacetic acid /əs'iːtɪk 'æsɪd/
[N-UNCOUNT]
Acetic acid is a colourless acid. It is the main substance in vinegar.acid house
[N-UNCOUNT]
Acid house is a type of electronic dance music with a strong, repeated rhythm.acid rain
[N-UNCOUNT]
Acid rain is rain polluted by acid that has been released into the atmosphere from factories and other industrial processes. Acid rain is harmful to the environment.acid test
[N-SING] the N
The acid test of something is an important aspect or result that it might have, which allows you to decide whether it is true or successful.
The acid test of a school is `would you send your own children there?'ami|no acid /əm'iːnoʊ 'æsɪd/ (amino acids)
[N-COUNT] usu pl
Amino acids are substances containing nitrogen and hydrogen and which are found in proteins. Amino acids occur naturally in the body.ascor|bic acid /æsk'ɔːrbɪk 'æsɪd/
[N-UNCOUNT]
Ascorbic acid is another name for vitamin C. (TECHNICAL)car|bol|ic acid /kɑːrb'ɒlɪk 'æsɪd/
[N-UNCOUNT]
Carbolic acid or carbolic is a liquid that is used as a disinfectant and antiseptic.
Carbolic acid is usually used for cleaning...
She smelled strongly of carbolic soap.cit|ric acid /s'ɪtrɪk 'æsɪd/
[N-UNCOUNT]
Citric acid is a weak acid found in many kinds of fruit, especially citrus fruit such as oranges and lemons.fo|lic acid /foʊlɪk'æsɪd/
[N-UNCOUNT]
Folic acid is one of the B group of vitamins. It is found in green vegetables and fruit.hydro|chlo|ric acid /h'aɪdrəklɒrɪk 'æsɪd/
[N-UNCOUNT]
Hydrochloric acid is a colourless, strong acid containing hydrogen and chlorine.lac|tic acid /l'æktɪk 'æsɪd/
[N-UNCOUNT]
Lactic acid is a type of acid which is found in sour milk and is also produced by your muscles when you have been exercising a lot.ni|tric acid
[N-UNCOUNT]
Nitric acid is a strong colourless acid containing nitrogen, hydrogen, and oxygen.nu|cleic acid /njuːkl'eɪɪk 'æsɪd, AM n'uː-/ (nucleic acids)
[N-MASS]
Nucleic acids are complex chemical substances, such as DNA, which are found in living cells. (TECHNICAL)phos|phor|ic acid /fɒsf'ɒrɪk 'æsɪd, AM -f'ɔːr-/
[N-UNCOUNT]
Phosphoric acid is a type of acid which contains phosphorus. (TECHNICAL)sul|fu|ric acid /sʌlfj'ʊərɪk 'æsɪd/
see sulphuric acidsul|phu|ric acid /sʌlfj'ʊərɪk 'æsɪd/
in AM, use sulfuric acid
[N-UNCOUNT]
Sulphuric acid is a colourless, oily, and very powerful acid.

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