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Acid (Noun)

Any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt.

Nouns denoting substances.

The chemist carefully handled the acid in the laboratory, wearing protective gloves and goggles to prevent injury.
The vinegar used in cooking is a weak acid that adds flavor to food without being too harsh.
The acid in the battery helped to generate electricity by facilitating a chemical reaction.
The doctor warned the patient that the medication might cause stomach acid to build up, leading to heartburn and discomfort.
The acid in the polluted river was harming the aquatic life, causing many fish to die or become deformed.

Street name for lysergic acid diethylamide.

Nouns denoting man-made objects.