1. Denoting the presence of the two-carbon fragment of a. acid. 2. Relating to vinegar; sour. [L. acetum, vinegar]
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ace·tic ə-'sēt-ik adj of, relating to, or producing acetic acid or vinegar
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ace·tic (ə-seґtik) (ə-setґik) pertaining to vinegar or its acid; sour.Medical dictionary. 2011.