acetic adjective. [ǝ'si:tɪk, ǝ'sɛt-] L18.
[French acétique, from Latin acetum vinegar: see -IC.]
1. Chemistry. acetic acid, a weak acid, CH₃COOH, of which vinegar is a crude dilute solution, and which when pure and anhydrous (glacial acetic acid) can be obtained as colourless crystals melting at 16.7C; ethanoic acid. L18.

2. Pertaining to or producing acetic acid. L19.
acetic anhydride a liquid, (CH₃CO)₂O, the anhydride of acetic acid.

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