(organic chemistry) 2-hydroxy-propanoic acid (CH₃.CHOH.CO₂H), a syrupy liquid, soluble in water; found in milk, wine and many fruits; used as a food additive and in many industrial applications.

(inorganic chemistry) An unstable, highly volatile, poisonous acid, HOCN, used to prepare cyanates; hydrolyzes in water to give ammonia and carbon dioxide

(chemistry) Any electrophylic compound that can accept a pair of electrons and form a coordinate covalent bond.

(chemistry) Iso-cyanic acid, HCNO, an unstable compound which forms explosive salts

(organic chemistry) A long-chain fatty acid, CH₃(CH₂)₁₈COOH, found in groundnut oil

A polyuronic acid gum, extracted from certain seaweeds, used as a food additive.

(organic chemistry) A long-chain polyunsaturated fatty acid, having 20 carbon atoms and four double bonds, found in animal fats; it is essential for human nutrition, being a precursor to the production of prostaglandins.

(organic chemistry) A white crystalline organic acid, C₆H₅COOH; the simplest aromatic carboxylic acid; used as a food preservative and in many other industrial applications.

(pharmacology) The acetate ester of salicylic acid (aspirin)

(organic chemistry) A white crystalline organic acid, 2-hydroxybenzoic acid, C₆H₄(OH)(COOH), used in the production of aspirin and other industrial chemicals.