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acetic acid

ace·tic acid [ ə-ˈsē-tik-]

acetic acid

noun

[ə-ˈsē-tik-]

Definition of acetic acid

: a colorless pungent liquid acid C₂H₄O₂ that is the chief acid of vinegar and that is used especially in synthesis (as of plastics)

Recent Examples on the Web

//Comprehensive analyses of bacterial metabolic products revealed that acetic acid excreted by the NCC2705 strain in the gut inhibited the activity of a toxin produced by the pathogenic E. coli (Shiga toxin).
— Enea Rezzonico, Scientific American, "Nestlé's research on nutrition and the human gut microbiome," 17 Feb. 2015
//For instance, acetic acid in a fabric display-case liner might be safe for a clothing exhibit but would corrode metallic art.
— National Geographic, "This chemist is preserving art—before it’s too late," 23 July 2019
//Some studies linked acetic acid with a mild reduction in blood sugar spikes after meals.
— Jaclyn London, Ms, Rd, Cdn, Good Housekeeping, "The Real Benefits of Apple Cider Vinegar, According to a Nutritionist," 21 Nov. 2018
//Vinegar’s active ingredient, acetic acid, can be produced naturally through bacterial fermentation, as in apple cider vinegar, or industrially, via chemical reactions from such source materials as methanol.
— Margaret Roach, Good Housekeeping, "Why It Can Be Dangerous to Use Vinegar to Kill Weeds," 15 Aug. 2018
//Vinegar’s active ingredient, acetic acid, can be produced naturally through bacterial fermentation, as in apple-cider vinegar, or industrially, via chemical reactions from such source materials as methanol.
— Margaret Roach, Good Housekeeping, "Why It Can Be Dangerous To Use Vinegar To Kill Weeds," 18 May 2017
//But the concentration of acetic acid in this is so high, it should be labeled a poison.
— Peter Andrey Smith, Outside Online, "Don't Trust the Label on Your Supplements," 5 July 2018
//In fact, household products with acetic acid content above 20 percent should be labeled as poisons, but foods and supplements are exempt from such labeling!
— Houston Chronicle, "10 steps to protect your heart, brain and body from disease and premature aging," 20 May 2018
//Buy now: $12; Amazon.com Apple cider vinegar: Vinegar contains acetic acid which helps ease sunburn pain, itching, and inflammation.
— Allison Young, Good Housekeeping, "Make This DIY Cooling Body Butter To Soothe Sunburned Skin," 7 June 2017

First Known Use of acetic acid

1788, in the meaning defined above

History and Etymology for acetic acid

acetic borrowed from French acétique, from Latin acētum "sour wine, vinegar" (noun derivative from *acētus, verbal adjective of acēre "to be sour," going back to Indo-European h₂eḱ-eh₁- "to be sharp") + French -ique -ic entry 1 — more at edge entry 1

Dictionary Entries near acetic acid