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Synonyms

fructose

American  
[fruhk-tohs, frook-, frook-] / ˈfrʌk toʊs, ˈfrʊk-, ˈfruk- /

noun

  1. Chemistry, Pharmacology. a yellowish to white, crystalline, water-soluble, levorotatory ketose sugar, C 6 H 12 O 6 , sweeter than sucrose, occurring in invert sugar, honey, and a great many fruits: used in foodstuffs and in medicine chiefly in solution as an intravenous nutrient.

fructose British  
/ -təʊz, ˈfrʌktəʊs, ˈfrʊk- /

noun

  1. Also called: laevulose.   fruit sugar.  a white crystalline water-soluble sugar occurring in honey and many fruits. Formula: C 6 H 12 O 6

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
fructose Scientific  
/ frŭk′tōs′ /

  1. A simple sugar (monosaccharide) found in honey, many fruits, and some vegetables. Fructose linked to glucose is the structure of table sugar, or sucrose. Fructose is an important source of energy for cellular processes. Chemical formula: C 6 H 12 O 6 .

Etymology

Origin of fructose

First recorded in 1860–65; fruct- + -ose 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

And it is one of very few to still use real sugar instead of high fructose corn syrup.

From BBC • Feb. 25, 2026

The team also discovered that the liver can receive fructose through multiple metabolic routes.

From Science Daily • Dec. 17, 2025

Enzymes in the gut can generate sorbitol, which is then transported to the liver and converted into fructose.

From Science Daily • Dec. 17, 2025

"Sugar, especially the fructose in sugary drinks and sweets, has long been suspected of increasing the risk of developing metabolic diseases -- this needs to be investigated," says Bergheim.

From Science Daily • Nov. 30, 2025

It’s a blend of 55 percent fructose and 45 percent glucose that tastes exactly as sweet as table sugar.

From "The Omnivore's Dilemma" by Michael Pollan

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.