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
Mozaffarian said seed oils can help lower glucose levels, improve insulin sensitivity, reduce bad (LDL) cholesterol, reduce triglycerides and increase levels of positive (HDL) cholesterol.
—
Mary Kekatos,
ABC News,
3 July 2026
Continuous glucose monitors changed diabetes care by reducing friction.
—
Tetiana Aleksandrova,
Forbes.com,
2 July 2026
It’s regulated in the same product category with drug dose calculators that take inputs like blood glucose levels and return insulin dosing recommendations.
—
Mario Aguilar,
STAT,
2 July 2026
The sugars in watermelon and pineapple are naturally occurring glucose, fructose, and sucrose.
—
Amber J. Tresca,
Verywell Health,
2 July 2026
See All Example Sentences for glucose
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.
Mary Kekatos,
ABC News,
3 July 2026
Continuous glucose monitors changed diabetes care by reducing friction.
—
Tetiana Aleksandrova,
Forbes.com,
2 July 2026
It’s regulated in the same product category with drug dose calculators that take inputs like blood glucose levels and return insulin dosing recommendations.
—
Mario Aguilar,
STAT,
2 July 2026
The sugars in watermelon and pineapple are naturally occurring glucose, fructose, and sucrose.
—
Amber J. Tresca,
Verywell Health,
2 July 2026
See All Example Sentences for glucose
Cite this Entry
“Glucose.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/glucose. Accessed 5 Jul. 2026.
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
Love words? Need even more definitions?
Merriam-Webster unabridged
