acetic acid  Say it  Common Compound Library 
(CH₃COOH, HC₂H₃O₂). A simple organic acid that gives vinegar its characteristic odor and flavor. Glacial acetic acid is pure acetic acid.

The following video provides you with the correct English pronunciation of the word "acetic acid (ethanoic acid; vinegar acid; methanecarboxylic acid)", to help you become a better English speaker.