: a monounsaturated fatty acid C18H34O2 obtained from natural fats and oils

Examples of oleic acid in a Sentence

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Plus, as mentioned earlier, oleic acid can combat inflammation. Kirsten Nunez, Martha Stewart, 23 Apr. 2026 Extra-Virgin Olive Oil Olive oil is high in heart-healthy monounsaturated fats, particularly oleic acid, which has strong anti-inflammatory properties. Jillian Kubala, Health, 12 Mar. 2026 Patatua fruit oil and tsubaki seed oil (also known as camellia seed oil) are both rich in oleic acid and antioxidants to enhance shine and strengthen weak hair, which reduces breakage. Reece Andavolgyi, InStyle, 19 Jan. 2026 For example, oleic acid from cooking, squalene from human skin and bisphenol A from hard plastics can remain on surfaces for years if undisturbed. Katelyn Richard, The Conversation, 9 Jan. 2026 See All Example Sentences for oleic acid

Word History

First Known Use

1819, in the meaning defined above

Time Traveler
The first known use of oleic acid was in 1819

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Cite this Entry

“Oleic acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oleic%20acid. Accessed 2 May. 2026.

Medical Definition

oleic acid

noun
: a monounsaturated fatty acid C18H34O2 found in natural fats and oils

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