1. a colorless, volatile organic compound (CH₃CHO) produced by the oxidation of ethanol, used in the manufacture of acetic acid, plastics, and other chemicals.
Usage: chemistry; also called ethanal

Examples

• Acetaldehyde is an intermediate compound in the metabolism of alcohol in the human body.
• The chemical industry produces acetaldehyde on a large scale for use in manufacturing acetic acid.
• Acetaldehyde has a pungent odor and is highly flammable.
• Exposure to acetaldehyde can occur in certain occupational settings such as chemical plants.
• The oxidation of ethanol yields acetaldehyde as a primary product.