fruc·​tose ˈfrək-ˌtōs How to pronounce fructose (audio)
ˈfru̇k- How to pronounce fructose (audio) -ˌtōz How to pronounce fructose (audio)
: a crystalline sugar C6H12O6 sweeter and more soluble than glucose
: the very sweet levorotatory d-form of fructose that occurs especially in fruit juices and honey

called also fruit sugar, levulose

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Example Sentences

Recent Examples on the Web Most fruit is high in fructose, which in concentrated doses can upset the stomach. Wes Judd, Outside Online, 29 Jan. 2018 By using extra virgin olive oil as the fat base for their products, which is listed as the third ingredient after water and fructose, Wildgood may attract consumers with the health halo of a longtime Mediterranean diet staple. Carolyn L. Todd, SELF, 14 May 2021 Natural sugars are present in nutritious foods like fruit and milk in the form of fructose and lactose. Lisa Drayer, CNN, 14 Sep. 2020 These include fructose, which is found in fruit and root vegetables, lactose which is found in dairy products, and sucrose which is found in all different types of naturally occurring carbohydrates. Stefani Sassos, Ms, Rdn, Cso, Good Housekeeping, 24 Feb. 2020 The best fruits for the first two phases are lower in fructose, which include blueberries, kiwi, mandarins, oranges, papaya, pineapple, strawberries, and rhubarb. Zee Krstic, Good Housekeeping, 26 Jan. 2020 Why did all of these high-energy, high-fructose, hyper-colorful ditties feel sapped of their vitality, stripped of their sweetness and drained of their saturation? Chris Richards, Washington Post, 26 Nov. 2019 On the other hand, refined sugars used to make breakfast cereals, pastries, sodas, fruit drinks, and other sweet foods and beverages primarily contain glucose and fructose. Howard Lewine,, 23 Oct. 2019 Giving glucose or fructose to the NAFLD patients similarly produced big jumps in blood alcohol levels that healthy controls didn’t experience. Jon Cohen, Science | AAAS, 19 Sep. 2019 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fructose.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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Word History


International Scientific Vocabulary fruct- (from Latin fructus fruit) + -ose entry 2

First Known Use

circa 1864, in the meaning defined at sense 1

Time Traveler
The first known use of fructose was circa 1864

Dictionary Entries Near fructose

Cite this Entry

“Fructose.” Dictionary, Merriam-Webster, Accessed 20 Aug. 2022.

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Medical Definition


fruc·​tose ˈfrək-ˌtōs How to pronounce fructose (audio) ˈfrük- How to pronounce fructose (audio) ˈfru̇k- How to pronounce fructose (audio)
: an optically active sugar C6H12O6 that differs from glucose in having a ketonic rather than an aldehydic carbonyl group
: the very sweet soluble levorotatory D-form of fructose that occurs especially in fruit juices and honey

called also levulose

More from Merriam-Webster on fructose

Last Updated: 3 Jul 2022

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