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
In a new study, a team of researchers has developed a flow cell battery powered by vitamin B2 (riboflavin) and glucose.
—
Aamir Khollam, Interesting Engineering, 16 Oct. 2025
These simulations, published in March 2025, were able to accurately predict different diabetes complications and the amount of time someone’s glucose was in a healthy range.
—Carrie Arnold, Scientific American, 14 Oct. 2025
The ring maker also partnered with Dexcom, a leader in glucose monitoring technology, late last year to integrate Dexcom glucose data with biometrics collected by Oura so users can monitor their glucose levels.
—Jaures Yip, CNBC, 14 Oct. 2025
In sugary beverages, the higher sugar content causes rapid spikes in blood glucose and insulin, which can promote weight gain, Liu said.
—Sandee Lamotte, CNN Money, 6 Oct. 2025
See All Example Sentences for glucose
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Aamir Khollam, Interesting Engineering, 16 Oct. 2025
These simulations, published in March 2025, were able to accurately predict different diabetes complications and the amount of time someone’s glucose was in a healthy range.
—Carrie Arnold, Scientific American, 14 Oct. 2025
The ring maker also partnered with Dexcom, a leader in glucose monitoring technology, late last year to integrate Dexcom glucose data with biometrics collected by Oura so users can monitor their glucose levels.
—Jaures Yip, CNBC, 14 Oct. 2025
In sugary beverages, the higher sugar content causes rapid spikes in blood glucose and insulin, which can promote weight gain, Liu said.
—Sandee Lamotte, CNN Money, 6 Oct. 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 20 Oct. 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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