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acid US English

A chemical substance that neutralizes alkalis, dissolves some metals, and turns litmus red; typically, a corrosive or sour-tasting liquid of this kind

acid US Thesaurus

a slightly acid flavor

acid–base US English

(Usually attributive) designating a process, property, etc., involving or dependent on the reaction between an acid and a base.

acid air US English

Chemistry hydrogen chloride gas (now historical).

acid bath US English

An act or the process of immersing or washing something (in early medical use occasionally a person) in a container of acid or an acidic solution, typically as part of a manufacturing process; (also) the container or liquid used for this purpose; also figurative and in figurative context.

acid bomb US English

An explosive device containing acid; specifically a simple home-made one in which the explosion is that of an acid-filled container under the pressure of gas evolved during an internal chemical reaction.

acid drop US English

A kind of boiled sweet with a sharp taste

acid dye US English

A dye which is applied in an acidic solution, the chromophore typically being an anionic species.

acid-fast US English

Denoting bacteria that cannot be decolorized by an acid after staining, which is characteristic of the mycobacteria that cause tuberculosis and leprosy

acid-free US English

Not containing any acid; (of paper) having neutral or slightly alkaline pH and thus being more resistant to deterioration.

acid-hued US English

Vivid, psychedelic.

acid jazz US English

A kind of popular dance music incorporating elements of jazz, funk, soul, and hip-hop

acid rain US English

Rainfall made sufficiently acidic by atmospheric pollution that it causes environmental harm, typically to forests and lakes. The main cause is the industrial burning of coal and other fossil fuels, the waste gases from which contain sulfur and nitrogen oxides, which combine with atmospheric water to form acids

acid rock US English

A type of rock music, mainly of the late 1960s, associated with or inspired by the use of hallucinogenic drugs

acid salt US English

A salt formed by incomplete replacement of the hydrogen of an acid, e.g., potassium hydrogen sulfate (KHSO4)

acid test US English

A conclusive test of the success or value of something

acid trip US English

A trip induced by acid.

keto acid US English

A compound whose molecule contains both a carboxyl group (—COOH) and a ketone group (—CO—)

lead-acid US English

Denoting a secondary cell or battery in which the electrodes are plates or grids of lead (or lead alloy) immersed in dilute sulfuric acid. The anode is coated with lead dioxide and the cathode with spongy lead

meta-acid US English

The least hydrated of a series of oxoacids formed from the same anhydride.

non-acid US English

Not acidic; not having the properties of an acid; = non-acidic.

oily acid US English

A fatty acid.

uric acid US English

An almost insoluble compound that is a breakdown product of nitrogenous metabolism. It is the main excretory product in birds, reptiles, and insects

acetic acid US English

The acid that gives vinegar its characteristic taste. The pure acid is a colorless viscous liquid or glassy solid

acid colour US English

An acid dye.

acid-eating US English

Characterized by the taking of acid; that takes acid.

acid freak US English

A person who takes acid, especially habitually.

acid-fried US English

Under, or as if under, the influence of acid; affected by the long-term use of acid.

acid house US English

A kind of popular synthesized dance music with a fast repetitive beat, popular in the 1980s and associated with the taking of drugs such as Ecstasy

acid-loving US English

(Of a plant, bacterium, etc.) thriving in acid conditions.

acid mantle US English

The thin, slightly acidic layer of sebum and other secretions present on the surface of the skin and having mild antimicrobial properties.

acid-proof US English

Impervious to acid; capable of resisting attack or degradation by acid.

acid reflux US English

A condition in which acidic gastric fluid is regurgitated into the esophagus, causing heartburn

acid-sweet US English

That tastes both sharp (or sour) and sweet.

acid tablet US English

= acidulated tablet.

acid tongue US English

A sharp or severe manner of speaking, especially one characterized by cutting or acerbic remarks.

acid value US English

A quantity expressing the free acid content of a substance, especially an oil or fat.

adipic acid US English

A crystalline fatty acid obtained from natural fats and used especially in the manufacture of nylon

aerial acid US English

A gas in the air which produces an acid when dissolved in water, later identified with carbon dioxide.

amino acid US English

A simple organic compound containing both a carboxyl (—COOH) and an amino (—NH2) group

arabic acid US English

= arabinic acid.

boric acid US English

A weakly acid crystalline compound derived from borax, used as a mild antiseptic and in the manufacture of heat-resistant glass and enamels

bromic acid US English

A strongly oxidizing acid known only in aqueous solutions

cholic acid US English

A compound produced by oxidation of cholesterol. It is a steroidal fatty acid and its salts are present in bile

citric acid US English

A sharp-tasting crystalline acid present in the juice of lemons and other sour fruits. It is made commercially by the fermentation of sugar and used as a flavoring and setting agent

cyanic acid US English

A colorless, poisonous, volatile, strongly acidic liquid

erucic acid US English

A solid compound present in mustard and rape seeds

fatty acid US English

A carboxylic acid consisting of a hydrocarbon chain and a terminal carboxyl group, especially any of those occurring as esters in fats and oils

ferric acid US English

Any of a number of (sometimes hypothetical) oxyacids containing iron in a higher oxidation state; a solution containing such an acid, used especially to etch or dissolve copper.

fluor acid US English

= hydrofluoric acid (now chiefly historical).

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