acids Definition

a sour substance; specifically : any of various typically water-soluble and sour compounds that in solution are capable of reacting with a base to form a salt, redden litmus, and have a pH less than 7, that are hydrogen-containing molecules or ions able to give up a proton to a base, or that are substances able to accept an unshared pair of electrons from a base

something incisive, biting, or sarcastic

lsd

a plant hormone C15H20O4 that is a sesquiterpene widespread in nature and that typically promotes leaf abscission and dormancy and has an inhibitory effect on cell elongation

a colorless pungent liquid acid C2H4O2 that is the chief acid of vinegar and that is used especially in synthesis (as of plastics)

an unstable acid C4H6O3 that is a ketone body found in abnormal quantities in the blood and urine in some conditions (such as diabetes)

a white crystalline derivative C9H8O4 of salicylic acid used for relief of pain and fever : aspirin

an unsaturated liquid acid C3H4O2 that polymerizes readily to form useful products (such as constituents for varnishes and lacquers)

amp

a white crystalline dicarboxylic acid C6H10O4 formed by oxidation of various fats and also made synthetically for use especially in the manufacture of nylon

an insoluble colloidal acid (C6H8O6)n that in the form of its salts is a constituent of the cell walls of brown algae

any of various carboxylic acids with a hydroxyl group attached at the alpha position; specifically : one (such as malic acid or lactic acid) that occurs in natural products (such as fruits, sugarcane, or yogurt) and is used in cosmetics for its exfoliating effect on the surface layer of skin —called also AHA