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English word

acid

UK /ˈæsɪd/US /ˈæsɪd/

adjective

that contains acid or has the essential characteristics of an acid; that has a pH of less than seven

noun

a chemical, usually a liquid, that contains hydrogen and has a pH of less than seven. The hydrogen can be replaced by a metal to form a salt. Acids usually have a bitter sharp taste and can often burn holes in or damage things they touch.

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