fructose

noun

fruc·​tose ˈfrək-ˌtōs  ˈfrük-  ˈfru̇k- 

-ˌtōz

1

: a crystalline sugar C₆H₁₂O₆ sweeter and more soluble than glucose

2

: the very sweet levorotatory d-form of fructose that occurs especially in fruit juices and honey

called also fruit sugar, levulose

Examples of fructose in a Sentence

Recent Examples on the Web

The changes follow a move made in 2025; In-N-Out uses real sugar instead of high-fructose corn syrup in its ketchup found in packets and dispensers, according to the burger chain. — Paris Barraza, USA Today, 9 Sep. 2026

Cooking decreases some of the sugars in corn, such as glucose, fructose, and maltose. — Amy Brownstein, Verywell Health, 3 Sep. 2026

Such a change — which Kessler said FDA has the authority to do — would put the onus on food makers to prove refined carbs and sweeteners like high-fructose corn syrup are OK for human consumption. — Isabella Cueto, STAT, 10 Aug. 2026

Honey is primarily made of water and two different types of sugar—glucose and fructose—and crystallization happens when the sugars naturally separate from the water over time. — Heather Riske, Better Homes & Gardens, 21 July 2026

Word History

Etymology

Latin frūctus fruit entry 1 + -ose entry 2

Note: The term was apparently introduced by the British chemist William Allen Miller (1817-70) in Elements of Chemistry: Theoretical and Practical, Part III, Organic Chemistry (London, 1857), p. 57.

First Known Use

circa 1864, in the meaning defined at sense 1

Rhymes for fructose

• arkose
• engross
• faroese
• fucose
• gatos
• glucose
• jocose
• morose
• plateaus
• spinose
• vadose
• adios

Kids Definition

fructose

noun

fruc·​tose ˈfrək-ˌtōs  ˈfru̇k- 

: a very sweet sugar that dissolves easily and occurs especially in fruit juices and honey

Medical Definition

fructose

noun

fruc·​tose ˈfrək-ˌtōs  ˈfrük-  ˈfru̇k- 

-ˌtōz

1

: an optically active sugar C₆H₁₂O₆ that differs from glucose in having a ketonic rather than an aldehydic carbonyl group

2

: the very sweet soluble levorotatory D-form of fructose that occurs especially in fruit juices and honey

called also levulose