Definition of acetic in US English:



  • Of or like vinegar or acetic acid.

    • ‘Glycin dissolves readily in alkaline or acetic solutions, but is virtually insoluble in plain water.’
    • ‘Immature embryos fixed in acetic alcohol were rinsed in distilled water for 10 minutes under vacuum conditions.’
    • ‘The chromosomes were stained with acetic orcein and visualized with a light microscope.’
    • ‘Not all wine becomes acetic, but when it does it actually can be used for cooking, in dishes that call for vinegar.’
    • ‘Most everyday wines are very low in acetic acid but some red wines may be excessively acetic.’


Late 18th century: from French acétique, from Latin acetum ‘vinegar’.