achaian
- n a member of one of four linguistic divisions of the prehistoric Greeks
acetum
- n a dilute solution of acetic acid that is used as a solvent (e.g. for a drug)
- n sour-tasting liquid produced usually by oxidation of the alcohol in wine or cider and used as a condiment or food preservative
acetyl chloride
- n colorless liquid acyl chloride (CH3COCl) that has a pungent odor