Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of, relating to, or producing acetic acid or vinegar.
  • adj. Having an acetic taste; sour-tasting.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having a sour taste; sour; acid.
  • adj. Causing, or connected with, acetification; as, acetous fermentation.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having a sour taste; sour; acid.
  • adj. Causing, or connected with, acetification.

from The Century Dictionary and Cyclopedia

  • Having a sour taste; vinegary. Boyle. Also written acetose.
  • Of or pertaining to vinegar; causing or connected with acetification.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. tasting or smelling like vinegar

Etymologies

Middle English, sour, from Medieval Latin acētōsus, vinegary, from Latin acētum, vinegar; see acetum.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin acetum ("vinegar"), from acere ("to be sour"). (Wiktionary)

Examples

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  • From Thomas Carlyle's The French Revolution

    March 6, 2011