achaian
- n a member of one of four linguistic divisions of the prehistoric Greeks
acetabulum
- n the cup-shaped hollow in the hipbone into which the head of the femur fits to form a ball-and-socket joint
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