fatty acid

noun

1
: any of numerous saturated aliphatic monocarboxylic acids CnH2n+1COOH (such as acetic acid) including many that occur naturally usually in the form of esters in fats, waxes, and essential oils
2
: any of the saturated or unsaturated monocarboxylic acids (such as palmitic acid) usually with an even number of carbon atoms that occur naturally in the form of glycerides in fats and fatty oils

Examples of fatty acid in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Omega 3s — healthy fatty acids commonly found in fish or chia seeds — help lower triglycerides, a type of fat, in our blood, the Cleveland Clinic said. Eduardo Cuevas, USA TODAY, 26 Jan. 2025 Other nutrients: Some multivitamins include additional ingredients like antioxidants (e.g., lutein or lycopene), omega-3 fatty acids, or herbal extracts. Lindsay Curtis, Verywell Health, 22 Jan. 2025 Now, testing has discovered these balls contain a mix of nasty substances, including fecal bacteria, fatty acids and E. coli. Raul A. Reyes, Newsweek, 22 Jan. 2025 Enhanced with moisturizing fatty acids that impart a dewy gleam at any age, the formulation also contains sea daffodil extract to brighten dark spots. Jenny Berg, Vogue, 21 Jan. 2025 See all Example Sentences for fatty acid 

Word History

First Known Use

1838, in the meaning defined at sense 1

Time Traveler
The first known use of fatty acid was in 1838

Dictionary Entries Near fatty acid

Cite this Entry

“Fatty acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fatty%20acid. Accessed 2 Feb. 2025.

Kids Definition

fatty acid

noun
: any of numerous acids that contain only carbon, hydrogen, and oxygen and occur naturally in fats and various oils

Medical Definition

fatty acid

noun
1
: any of numerous saturated aliphatic acids CnH2n+1COOH (as lauric acid) containing a single carboxyl group and including many that occur naturally usually in the form of esters in fats, waxes, and essential oils
2
: any of the saturated or unsaturated organic acids (as palmitic acid) that have a single carboxyl group and usually an even number of carbon atoms and that occur naturally in the form of glycerides in fats and fatty oils

More from Merriam-Webster on fatty acid

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!