fish oil

noun

: a fatty oil from the bodies of various fishes (such as menhaden or sardines) that contains large amounts of unsaturated fatty acids and is used as a dietary supplement and in making various products (such as cosmetics and paints)

Examples of fish oil 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.
Some prescription drugs and supplements, including fish oil and turmeric, can also affect bleeding or medication levels. — Deirdre Bardolf, FOXNews.com, 24 Oct. 2026 In at least four cases, the use of fishmeal or fish oil and their link to industrial fishing and ecosystem depletion were central to arguments that the products were not environmentally sustainable. — Ian Urbina, Los Angeles Times, 9 Oct. 2026 While many fish oil supplements are available over the counter, prescription versions contain highly purified and concentrated forms used to treat very high triglyceride levels. — T'keyah Bazin, Verywell Health, 1 Oct. 2026 Vitamin D and fish oil belong, presumably, on the green-bean side of the ledger. — Ariana Eunjung Cha, Washington Post, 10 Sep. 2026 See All Example Sentences for fish oil

Word History

First Known Use

1654, in the meaning defined above

Time Traveler
The first known use of fish oil was in 1654

Rhymes for fish oil

See All Rhymes for fish oil

Browse Nearby Words

fishnet
fish oil
fish or cut bait
See all Nearby Words

Cite this Entry

“Fish oil.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fish%20oil. Accessed 29 Oct. 2026.

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Medical Definition

fish oil

noun
: a fatty oil that is obtained from oily fish (such as herring or menhaden), contains large amounts of unsaturated fatty acids, and is used as a dietary supplement and in making various products (such as protective coatings, cosmetics, and animal feed)
Scientists learned some time ago that there are significant health benefits from consuming omega-3 fatty acids, which are found mostly in fish oils, algal oils, and linseed oil.—Felicia M. Willis, Today's Chemist at Work

More from Merriam-Webster on fish oil

Britannica.com: Encyclopedia article about fish oil

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