1
: a crystalline sugar C6H12O6
specifically
: the sweet colorless soluble dextrorotatory form that occurs widely in nature and is the usual form in which carbohydrate is assimilated by animals
2
: a light-colored syrup made from cornstarch
Examples of glucose in a Sentence
Recent Examples on the Web
The smell Cruciferous vegetables such as cauliflower, cabbage, kale, broccoli and Brussels sprouts contain glucosinolate, a unique phytonutrient that’s made up of amino acids, glucose, nitrogen and sulfur.
—
Sheah Rarback, Miami Herald, 18 Sep. 2025
For others, simplifying medications, setting safe blood pressure and glucose goals, and avoiding falls or drug interactions take priority.
—Lauryn Higgins, Time, 17 Sep. 2025
Research shows meal sequencing can improve short-term glucose responses, but long-term benefits depend on overall diet and lifestyle habits.
—Verywell Health, 17 Sep. 2025
However, for most people, an increase in blood glucose isn’t too worrisome.
—Sarah Garone, Health, 17 Sep. 2025
See All Example Sentences for glucose
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Sheah Rarback, Miami Herald, 18 Sep. 2025
For others, simplifying medications, setting safe blood pressure and glucose goals, and avoiding falls or drug interactions take priority.
—Lauryn Higgins, Time, 17 Sep. 2025
Research shows meal sequencing can improve short-term glucose responses, but long-term benefits depend on overall diet and lifestyle habits.
—Verywell Health, 17 Sep. 2025
However, for most people, an increase in blood glucose isn’t too worrisome.
—Sarah Garone, Health, 17 Sep. 2025
See All Example Sentences for glucose
Cite this Entry
“Glucose.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/glucose. Accessed 19 Sep. 2025.
Copy CitationKids Definition
glucose
noun
glu·cose
ˈglü-ˌkōs 
: a sugar that occurs especially in a naturally occurring form that is found in plants, fruits, and blood and is a source of energy for living things
Medical Definition
glucose
noun
glu·cose
ˈglü-ˌkōs, -ˌkōz
: an optically active sugar C6H12O6 that has an aldehydic carbonyl group
especially
: the sweet colorless soluble dextrorotatory form that occurs widely in nature and is the usual form in which carbohydrate is assimilated by animals
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