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

Garlic may help lower blood pressure and cholesterol, while fish oil's omega-3 fatty acids can reduce triglycerides (fats in your blood) and support blood vessel health. —Lindsay Curtis, Verywell Health, 6 Oct. 2025

While industry groups successfully lobbied the White House for tariff exemptions for major vitamins, minerals and fish oils, other popular ingredients have still been affected. —Suzy Khimm, NBC news, 26 Aug. 2025

Magnesium supplements, which help support melatonin production, have skyrocketed in popularity in recent years, according to reports, surpassing even fish oil and probiotics. —Deirdre Bardolf, FOXNews.com, 23 Aug. 2025

Those with higher dietary intake of omega-3 fatty acids—commonly found in fish oils—had a lower risk of the condition, while children with the highest intake of saturated fats—found in foods such as butter, red meat and palm oil—were more likely to show signs of the disorder. —Daniella Gray, MSNBC Newsweek, 19 Aug. 2025

Word History

First Known Use

1785, in the meaning defined above

Rhymes for fish oil

• airfoil
• benzoyl
• despoil
• embroil
• etoile
• gargoyle
• recoil
• subsoil
• tinfoil
• topsoil
• trefoil
• turmoil

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