achaian
- n a member of one of four linguistic divisions of the prehistoric Greeks
acetal
- n any organic compound formed by adding alcohol molecules to aldehyde molecules
acetaldehyde
- n a colorless volatile water-soluble liquid aldehyde used chiefly in the manufacture of acetic acid and perfumes and drugs
acetamide
- n a colorless solid amide of acetic acid used as a solvent and in the synthesis of organic compounds
acetaminophen
- n an analgesic for mild pain but not for inflammation; also used as an antipyretic; (Datril, Tylenol, Panadol, Phenaphen, Tempra, and Anacin III are trademarks of brands of acetaminophen tablets)