unsaturated

adjective

un·​sat·​u·​rat·​ed ˌən-ˈsa-chə-ˌrā-təd How to pronounce unsaturated (audio)
: not saturated: such as
a
: capable of absorbing or dissolving more of something
an unsaturated solution
b
: able to form products by chemical addition
especially : having at least one double or triple bond between carbon atoms in a hydrocarbon chain
used especially of an oil, fat, or fatty acid
unsaturated fatty acids
see also unsaturated fat compare saturated sense 2b

Examples of unsaturated 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.
Both butter and margarine have a combination of saturated and unsaturated fatty acids. Rosemary Trout, Scientific American, 27 June 2026 Avocados Avocados pack a variety of healthy unsaturated fats, especially monounsaturated—the same type found in olive oil—with very little saturated fat. Matt Fuchs, Time, 26 June 2026 In contrast, many modern margarines contain more unsaturated fats, which have been associated with improved heart health and healthier cholesterol levels. Daryl Austin, USA Today, 25 June 2026 Avocados provide unsaturated fats and fiber, while whole-grain bread adds even more fiber. Lindsey Desoto, Health, 23 June 2026 See All Example Sentences for unsaturated

Word History

First Known Use

1756, in the meaning defined above

Time Traveler
The first known use of unsaturated was in 1756

Browse Nearby Words

Cite this Entry

“Unsaturated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unsaturated. Accessed 5 Jul. 2026.

Kids Definition

unsaturated

adjective
un·​sat·​u·​rat·​ed ˌən-ˈsach-ə-ˌrāt-əd How to pronounce unsaturated (audio)
ˈən-
: not saturated: as
a
: capable of absorbing or dissolving more of something
an unsaturated solution
b
: able to form products by combining chemically with other substances
especially : containing double or triple bonds between carbon atoms
an unsaturated fat

Medical Definition

unsaturated

adjective
un·​sat·​u·​rat·​ed -ˈsach-ə-ˌrāt-əd How to pronounce unsaturated (audio)
: not saturated: as
a
: capable of absorbing or dissolving more of something
an unsaturated solution
b
: able to form products by chemical addition
especially : having at least one double or triple bond between carbon atoms in a hydrocarbon chain
used especially of an oil, fat, or fatty acid
unsaturated fatty acids
see also unsaturated fat compare saturated sense 2
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