acid Definition in the Cambridge English Dictionary
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Definition of “acid” - English Dictionary

Definition of "acid" - American English Dictionary

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acidnoun [C/U]

 us   /ˈæs·ɪd/
chemistry any of ​variouschemicalsubstances that can ​produce salts , some of which are ​able to ​damage whatever they ​touch

acidadjective

 us   /ˈæs·ɪd/
sour in ​taste: The ​saladdressing has an acid ​taste. fig. An acid ​comment/​remark is something said or written in ​strongcriticism.
(Definition of acid from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "acid" - British English Dictionary

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acidnoun

uk   us   /ˈæs.ɪd/

acid noun (CHEMICAL)

B2 [C or U] any of ​various usually ​liquidsubstances that can ​react with and sometimes ​dissolve other ​materials: acetic/hydrochloric/​lactic acid Vinegar is an acid.
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acid noun (DRUG)

[U] slang for LSD (= an ​illegaldrug that makes ​peoplesee things that do not ​exist)

acidadjective

uk   us   /ˈæs.ɪd/

acid adjective (CHEMICAL)

(also acidic) containing acid, or having ​similarqualities to an acid: an acid ​taste/​smell acid ​soil

acid adjective (UNKIND)

used to ​describe a ​remark or way of ​speaking that is ​cruel or ​criticizes something in an ​unkind way: her acid ​wit When she ​spoke her ​tone was acid.
(Definition of acid from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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